Calculus Examples

$g (t) = t^{2} {(4 t + 9)}^{4}$

Step 1

Find the first derivative.

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Step 1.1

Differentiate using the Product Rule which states that $\frac{d}{d t} [f (t) g (t)]$ is $f (t) \frac{d}{d t} [g (t)] + g (t) \frac{d}{d t} [f (t)]$ where $f (t) = t^{2}$ and $g (t) = {(4 t + 9)}^{4}$ .

$t^{2} \frac{d}{d t} [{(4 t + 9)}^{4}] + {(4 t + 9)}^{4} \frac{d}{d t} [t^{2}]$

Step 1.2

Differentiate using the chain rule, which states that $\frac{d}{d t} [f (g (t))]$ is $f' (g (t)) g' (t)$ where $f (t) = t^{4}$ and $g (t) = 4 t + 9$ .

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Step 1.2.1

To apply the Chain Rule, set $u$ as $4 t + 9$ .

$t^{2} (\frac{d}{d u} [u^{4}] \frac{d}{d t} [4 t + 9]) + {(4 t + 9)}^{4} \frac{d}{d t} [t^{2}]$

Step 1.2.2

Differentiate using the Power Rule which states that $\frac{d}{d u} [u^{n}]$ is $n u^{n - 1}$ where $n = 4$ .

$t^{2} (4 u^{3} \frac{d}{d t} [4 t + 9]) + {(4 t + 9)}^{4} \frac{d}{d t} [t^{2}]$

Step 1.2.3

Replace all occurrences of $u$ with $4 t + 9$ .

$t^{2} (4 {(4 t + 9)}^{3} \frac{d}{d t} [4 t + 9]) + {(4 t + 9)}^{4} \frac{d}{d t} [t^{2}]$

Step 1.3

Differentiate.

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Step 1.3.1

By the Sum Rule, the derivative of $4 t + 9$ with respect to $t$ is $\frac{d}{d t} [4 t] + \frac{d}{d t} [9]$ .

$t^{2} (4 {(4 t + 9)}^{3} (\frac{d}{d t} [4 t] + \frac{d}{d t} [9])) + {(4 t + 9)}^{4} \frac{d}{d t} [t^{2}]$

Step 1.3.2

Since $4$ is constant with respect to $t$ , the derivative of $4 t$ with respect to $t$ is $4 \frac{d}{d t} [t]$ .

$t^{2} (4 {(4 t + 9)}^{3} (4 \frac{d}{d t} [t] + \frac{d}{d t} [9])) + {(4 t + 9)}^{4} \frac{d}{d t} [t^{2}]$

Step 1.3.3

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = 1$ .

$t^{2} (4 {(4 t + 9)}^{3} (4 \cdot 1 + \frac{d}{d t} [9])) + {(4 t + 9)}^{4} \frac{d}{d t} [t^{2}]$

Step 1.3.4

Multiply $4$ by $1$ .

$t^{2} (4 {(4 t + 9)}^{3} (4 + \frac{d}{d t} [9])) + {(4 t + 9)}^{4} \frac{d}{d t} [t^{2}]$

Step 1.3.5

Since $9$ is constant with respect to $t$ , the derivative of $9$ with respect to $t$ is $0$ .

$t^{2} (4 {(4 t + 9)}^{3} (4 + 0)) + {(4 t + 9)}^{4} \frac{d}{d t} [t^{2}]$

Step 1.3.6

Simplify the expression.

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Step 1.3.6.1

Add $4$ and $0$ .

$t^{2} (4 {(4 t + 9)}^{3} \cdot 4) + {(4 t + 9)}^{4} \frac{d}{d t} [t^{2}]$

Step 1.3.6.2

Multiply $4$ by $4$ .

$t^{2} (16 {(4 t + 9)}^{3}) + {(4 t + 9)}^{4} \frac{d}{d t} [t^{2}]$

Step 1.3.7

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = 2$ .

$t^{2} (16 {(4 t + 9)}^{3}) + {(4 t + 9)}^{4} (2 t)$

Step 1.3.8

Move $2$ to the left of ${(4 t + 9)}^{4}$ .

$t^{2} (16 {(4 t + 9)}^{3}) + 2 \cdot {(4 t + 9)}^{4} t$

Step 1.4

Simplify.

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Step 1.4.1

Factor $t \cdot 2 {(4 t + 9)}^{3}$ out of $t^{2} (16 {(4 t + 9)}^{3}) + 2 {(4 t + 9)}^{4} t$ .

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Step 1.4.1.1

Factor $t \cdot 2 {(4 t + 9)}^{3}$ out of $t^{2} (16 {(4 t + 9)}^{3})$ .

$t \cdot 2 {(4 t + 9)}^{3} (t \cdot (8)) + 2 {(4 t + 9)}^{4} t$

Step 1.4.1.2

Factor $t \cdot 2 {(4 t + 9)}^{3}$ out of $2 {(4 t + 9)}^{4} t$ .

$t \cdot 2 {(4 t + 9)}^{3} (t \cdot (8)) + t \cdot 2 {(4 t + 9)}^{3} (4 t + 9)$

Step 1.4.1.3

Factor $t \cdot 2 {(4 t + 9)}^{3}$ out of $t \cdot 2 {(4 t + 9)}^{3} (t \cdot (8)) + t \cdot 2 {(4 t + 9)}^{3} (4 t + 9)$ .

$t \cdot 2 {(4 t + 9)}^{3} (t \cdot (8) + 4 t + 9)$

Step 1.4.2

Combine terms.

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Step 1.4.2.1

Move $2$ to the left of $t$ .

$2 \cdot t {(4 t + 9)}^{3} (t \cdot (8) + 4 t + 9)$

Step 1.4.2.2

Move $8$ to the left of $t$ .

$2 t {(4 t + 9)}^{3} (8 \cdot t + 4 t + 9)$

Step 1.4.2.3

Add $8 t$ and $4 t$ .

$f' (t) = 2 t {(4 t + 9)}^{3} (12 t + 9)$

Step 2

Find the second derivative.

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Step 2.1

Since $2$ is constant with respect to $t$ , the derivative of $2 t {(4 t + 9)}^{3} (12 t + 9)$ with respect to $t$ is $2 \frac{d}{d t} [t {(4 t + 9)}^{3} (12 t + 9)]$ .

$2 \frac{d}{d t} [t {(4 t + 9)}^{3} (12 t + 9)]$

Step 2.2

Differentiate using the Product Rule which states that $\frac{d}{d t} [f (t) g (t)]$ is $f (t) \frac{d}{d t} [g (t)] + g (t) \frac{d}{d t} [f (t)]$ where $f (t) = t {(4 t + 9)}^{3}$ and $g (t) = 12 t + 9$ .

$2 (t {(4 t + 9)}^{3} \frac{d}{d t} [12 t + 9] + (12 t + 9) \frac{d}{d t} [t {(4 t + 9)}^{3}])$

Step 2.3

Differentiate.

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Step 2.3.1

By the Sum Rule, the derivative of $12 t + 9$ with respect to $t$ is $\frac{d}{d t} [12 t] + \frac{d}{d t} [9]$ .

$2 (t {(4 t + 9)}^{3} (\frac{d}{d t} [12 t] + \frac{d}{d t} [9]) + (12 t + 9) \frac{d}{d t} [t {(4 t + 9)}^{3}])$

Step 2.3.2

Since $12$ is constant with respect to $t$ , the derivative of $12 t$ with respect to $t$ is $12 \frac{d}{d t} [t]$ .

$2 (t {(4 t + 9)}^{3} (12 \frac{d}{d t} [t] + \frac{d}{d t} [9]) + (12 t + 9) \frac{d}{d t} [t {(4 t + 9)}^{3}])$

Step 2.3.3

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = 1$ .

$2 (t {(4 t + 9)}^{3} (12 \cdot 1 + \frac{d}{d t} [9]) + (12 t + 9) \frac{d}{d t} [t {(4 t + 9)}^{3}])$

Step 2.3.4

Multiply $12$ by $1$ .

$2 (t {(4 t + 9)}^{3} (12 + \frac{d}{d t} [9]) + (12 t + 9) \frac{d}{d t} [t {(4 t + 9)}^{3}])$

Step 2.3.5

Since $9$ is constant with respect to $t$ , the derivative of $9$ with respect to $t$ is $0$ .

$2 (t {(4 t + 9)}^{3} (12 + 0) + (12 t + 9) \frac{d}{d t} [t {(4 t + 9)}^{3}])$

Step 2.3.6

Simplify the expression.

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Step 2.3.6.1

Add $12$ and $0$ .

$2 (t {(4 t + 9)}^{3} \cdot 12 + (12 t + 9) \frac{d}{d t} [t {(4 t + 9)}^{3}])$

Step 2.3.6.2

Move $12$ to the left of $t {(4 t + 9)}^{3}$ .

$2 (12 \cdot (t {(4 t + 9)}^{3}) + (12 t + 9) \frac{d}{d t} [t {(4 t + 9)}^{3}])$

Step 2.4

Differentiate using the Product Rule which states that $\frac{d}{d t} [f (t) g (t)]$ is $f (t) \frac{d}{d t} [g (t)] + g (t) \frac{d}{d t} [f (t)]$ where $f (t) = t$ and $g (t) = {(4 t + 9)}^{3}$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t \frac{d}{d t} [{(4 t + 9)}^{3}] + {(4 t + 9)}^{3} \frac{d}{d t} [t]))$

Step 2.5

Differentiate using the chain rule, which states that $\frac{d}{d t} [f (g (t))]$ is $f' (g (t)) g' (t)$ where $f (t) = t^{3}$ and $g (t) = 4 t + 9$ .

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Step 2.5.1

To apply the Chain Rule, set $u$ as $4 t + 9$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (\frac{d}{d u} [u^{3}] \frac{d}{d t} [4 t + 9]) + {(4 t + 9)}^{3} \frac{d}{d t} [t]))$

Step 2.5.2

Differentiate using the Power Rule which states that $\frac{d}{d u} [u^{n}]$ is $n u^{n - 1}$ where $n = 3$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (3 u^{2} \frac{d}{d t} [4 t + 9]) + {(4 t + 9)}^{3} \frac{d}{d t} [t]))$

Step 2.5.3

Replace all occurrences of $u$ with $4 t + 9$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (3 {(4 t + 9)}^{2} \frac{d}{d t} [4 t + 9]) + {(4 t + 9)}^{3} \frac{d}{d t} [t]))$

Step 2.6

Differentiate.

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Step 2.6.1

By the Sum Rule, the derivative of $4 t + 9$ with respect to $t$ is $\frac{d}{d t} [4 t] + \frac{d}{d t} [9]$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (3 {(4 t + 9)}^{2} (\frac{d}{d t} [4 t] + \frac{d}{d t} [9])) + {(4 t + 9)}^{3} \frac{d}{d t} [t]))$

Step 2.6.2

Since $4$ is constant with respect to $t$ , the derivative of $4 t$ with respect to $t$ is $4 \frac{d}{d t} [t]$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (3 {(4 t + 9)}^{2} (4 \frac{d}{d t} [t] + \frac{d}{d t} [9])) + {(4 t + 9)}^{3} \frac{d}{d t} [t]))$

Step 2.6.3

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = 1$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (3 {(4 t + 9)}^{2} (4 \cdot 1 + \frac{d}{d t} [9])) + {(4 t + 9)}^{3} \frac{d}{d t} [t]))$

Step 2.6.4

Multiply $4$ by $1$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (3 {(4 t + 9)}^{2} (4 + \frac{d}{d t} [9])) + {(4 t + 9)}^{3} \frac{d}{d t} [t]))$

Step 2.6.5

Since $9$ is constant with respect to $t$ , the derivative of $9$ with respect to $t$ is $0$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (3 {(4 t + 9)}^{2} (4 + 0)) + {(4 t + 9)}^{3} \frac{d}{d t} [t]))$

Step 2.6.6

Simplify the expression.

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Step 2.6.6.1

Add $4$ and $0$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (3 {(4 t + 9)}^{2} \cdot 4) + {(4 t + 9)}^{3} \frac{d}{d t} [t]))$

Step 2.6.6.2

Multiply $4$ by $3$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3} \frac{d}{d t} [t]))$

Step 2.6.7

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = 1$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3} \cdot 1))$

Step 2.6.8

Multiply ${(4 t + 9)}^{3}$ by $1$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7

Simplify.

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Step 2.7.1

Apply the distributive property.

$2 (12 t {(4 t + 9)}^{3}) + 2 ((12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.2

Multiply $12$ by $2$ .

$24 (t {(4 t + 9)}^{3}) + 2 ((12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.3

Factor $2$ out of $24 t {(4 t + 9)}^{3} + 2 (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3})$ .

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Step 2.7.3.1

Factor $2$ out of $24 t {(4 t + 9)}^{3}$ .

$2 (12 t {(4 t + 9)}^{3}) + 2 (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3})$

Step 2.7.3.2

Factor $2$ out of $2 (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3})$ .

$2 (12 t {(4 t + 9)}^{3}) + 2 ((12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.3.3

Factor $2$ out of $2 (12 t {(4 t + 9)}^{3}) + 2 ((12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$ .

$2 (12 t {(4 t + 9)}^{3} + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4

Simplify each term.

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Step 2.7.4.1

Use the Binomial Theorem.

$2 (12 t ({(4 t)}^{3} + 3 {(4 t)}^{2} \cdot 9 + 3 (4 t) \cdot 9^{2} + 9^{3}) + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.2

Simplify each term.

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Step 2.7.4.2.1

Apply the product rule to $4 t$ .

$2 (12 t (4^{3} t^{3} + 3 {(4 t)}^{2} \cdot 9 + 3 (4 t) \cdot 9^{2} + 9^{3}) + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.2.2

Raise $4$ to the power of $3$ .

$2 (12 t (64 t^{3} + 3 {(4 t)}^{2} \cdot 9 + 3 (4 t) \cdot 9^{2} + 9^{3}) + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.2.3

Apply the product rule to $4 t$ .

$2 (12 t (64 t^{3} + 3 (4^{2} t^{2}) \cdot 9 + 3 (4 t) \cdot 9^{2} + 9^{3}) + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.2.4

Raise $4$ to the power of $2$ .

$2 (12 t (64 t^{3} + 3 (16 t^{2}) \cdot 9 + 3 (4 t) \cdot 9^{2} + 9^{3}) + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.2.5

Multiply $16$ by $3$ .

$2 (12 t (64 t^{3} + 48 t^{2} \cdot 9 + 3 (4 t) \cdot 9^{2} + 9^{3}) + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.2.6

Multiply $9$ by $48$ .

$2 (12 t (64 t^{3} + 432 t^{2} + 3 (4 t) \cdot 9^{2} + 9^{3}) + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.2.7

Multiply $4$ by $3$ .

$2 (12 t (64 t^{3} + 432 t^{2} + 12 t \cdot 9^{2} + 9^{3}) + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.2.8

Raise $9$ to the power of $2$ .

$2 (12 t (64 t^{3} + 432 t^{2} + 12 t \cdot 81 + 9^{3}) + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.2.9

Multiply $81$ by $12$ .

$2 (12 t (64 t^{3} + 432 t^{2} + 972 t + 9^{3}) + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.2.10

Raise $9$ to the power of $3$ .

$2 (12 t (64 t^{3} + 432 t^{2} + 972 t + 729) + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.3

Apply the distributive property.

$2 (12 t (64 t^{3}) + 12 t (432 t^{2}) + 12 t (972 t) + 12 t \cdot 729 + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.4

Simplify.

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Step 2.7.4.4.1

Rewrite using the commutative property of multiplication.

$2 (12 \cdot 64 t \cdot t^{3} + 12 t (432 t^{2}) + 12 t (972 t) + 12 t \cdot 729 + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.4.2

Rewrite using the commutative property of multiplication.

$2 (12 \cdot 64 t \cdot t^{3} + 12 \cdot 432 t \cdot t^{2} + 12 t (972 t) + 12 t \cdot 729 + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.4.3

Rewrite using the commutative property of multiplication.

$2 (12 \cdot 64 t \cdot t^{3} + 12 \cdot 432 t \cdot t^{2} + 12 \cdot 972 t \cdot t + 12 t \cdot 729 + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.4.4

Multiply $729$ by $12$ .

$2 (12 \cdot 64 t \cdot t^{3} + 12 \cdot 432 t \cdot t^{2} + 12 \cdot 972 t \cdot t + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5

Simplify each term.

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Step 2.7.4.5.1

Multiply $t$ by $t^{3}$ by adding the exponents.

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Step 2.7.4.5.1.1

Move $t^{3}$ .

$2 (12 \cdot 64 (t^{3} t) + 12 \cdot 432 t \cdot t^{2} + 12 \cdot 972 t \cdot t + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5.1.2

Multiply $t^{3}$ by $t$ .

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Step 2.7.4.5.1.2.1

Raise $t$ to the power of $1$ .

$2 (12 \cdot 64 (t^{3} t^{1}) + 12 \cdot 432 t \cdot t^{2} + 12 \cdot 972 t \cdot t + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5.1.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2 (12 \cdot 64 t^{3 + 1} + 12 \cdot 432 t \cdot t^{2} + 12 \cdot 972 t \cdot t + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5.1.3

Add $3$ and $1$ .

$2 (12 \cdot 64 t^{4} + 12 \cdot 432 t \cdot t^{2} + 12 \cdot 972 t \cdot t + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5.2

Multiply $12$ by $64$ .

$2 (768 t^{4} + 12 \cdot 432 t \cdot t^{2} + 12 \cdot 972 t \cdot t + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5.3

Multiply $t$ by $t^{2}$ by adding the exponents.

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Step 2.7.4.5.3.1

Move $t^{2}$ .

$2 (768 t^{4} + 12 \cdot 432 (t^{2} t) + 12 \cdot 972 t \cdot t + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5.3.2

Multiply $t^{2}$ by $t$ .

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Step 2.7.4.5.3.2.1

Raise $t$ to the power of $1$ .

$2 (768 t^{4} + 12 \cdot 432 (t^{2} t^{1}) + 12 \cdot 972 t \cdot t + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5.3.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2 (768 t^{4} + 12 \cdot 432 t^{2 + 1} + 12 \cdot 972 t \cdot t + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5.3.3

Add $2$ and $1$ .

$2 (768 t^{4} + 12 \cdot 432 t^{3} + 12 \cdot 972 t \cdot t + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5.4

Multiply $12$ by $432$ .

$2 (768 t^{4} + 5184 t^{3} + 12 \cdot 972 t \cdot t + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5.5

Multiply $t$ by $t$ by adding the exponents.

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Step 2.7.4.5.5.1

Move $t$ .

$2 (768 t^{4} + 5184 t^{3} + 12 \cdot 972 (t \cdot t) + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5.5.2

Multiply $t$ by $t$ .

$2 (768 t^{4} + 5184 t^{3} + 12 \cdot 972 t^{2} + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.5.6

Multiply $12$ by $972$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (t (12 {(4 t + 9)}^{2}) + {(4 t + 9)}^{3}))$

Step 2.7.4.6

Simplify each term.

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Step 2.7.4.6.1

Rewrite using the commutative property of multiplication.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t {(4 t + 9)}^{2} + {(4 t + 9)}^{3}))$

Step 2.7.4.6.2

Rewrite ${(4 t + 9)}^{2}$ as $(4 t + 9) (4 t + 9)$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t ((4 t + 9) (4 t + 9)) + {(4 t + 9)}^{3}))$

Step 2.7.4.6.3

Expand $(4 t + 9) (4 t + 9)$ using the FOIL Method.

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Step 2.7.4.6.3.1

Apply the distributive property.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t (4 t (4 t + 9) + 9 (4 t + 9)) + {(4 t + 9)}^{3}))$

Step 2.7.4.6.3.2

Apply the distributive property.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t (4 t (4 t) + 4 t \cdot 9 + 9 (4 t + 9)) + {(4 t + 9)}^{3}))$

Step 2.7.4.6.3.3

Apply the distributive property.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t (4 t (4 t) + 4 t \cdot 9 + 9 (4 t) + 9 \cdot 9) + {(4 t + 9)}^{3}))$

Step 2.7.4.6.4

Simplify and combine like terms.

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Step 2.7.4.6.4.1

Simplify each term.

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Step 2.7.4.6.4.1.1

Rewrite using the commutative property of multiplication.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t (4 \cdot 4 t \cdot t + 4 t \cdot 9 + 9 (4 t) + 9 \cdot 9) + {(4 t + 9)}^{3}))$

Step 2.7.4.6.4.1.2

Multiply $t$ by $t$ by adding the exponents.

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Step 2.7.4.6.4.1.2.1

Move $t$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t (4 \cdot 4 (t \cdot t) + 4 t \cdot 9 + 9 (4 t) + 9 \cdot 9) + {(4 t + 9)}^{3}))$

Step 2.7.4.6.4.1.2.2

Multiply $t$ by $t$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t (4 \cdot 4 t^{2} + 4 t \cdot 9 + 9 (4 t) + 9 \cdot 9) + {(4 t + 9)}^{3}))$

Step 2.7.4.6.4.1.3

Multiply $4$ by $4$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t (16 t^{2} + 4 t \cdot 9 + 9 (4 t) + 9 \cdot 9) + {(4 t + 9)}^{3}))$

Step 2.7.4.6.4.1.4

Multiply $9$ by $4$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t (16 t^{2} + 36 t + 9 (4 t) + 9 \cdot 9) + {(4 t + 9)}^{3}))$

Step 2.7.4.6.4.1.5

Multiply $4$ by $9$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t (16 t^{2} + 36 t + 36 t + 9 \cdot 9) + {(4 t + 9)}^{3}))$

Step 2.7.4.6.4.1.6

Multiply $9$ by $9$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t (16 t^{2} + 36 t + 36 t + 81) + {(4 t + 9)}^{3}))$

Step 2.7.4.6.4.2

Add $36 t$ and $36 t$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t (16 t^{2} + 72 t + 81) + {(4 t + 9)}^{3}))$

Step 2.7.4.6.5

Apply the distributive property.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 t (16 t^{2}) + 12 t (72 t) + 12 t \cdot 81 + {(4 t + 9)}^{3}))$

Step 2.7.4.6.6

Simplify.

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Step 2.7.4.6.6.1

Rewrite using the commutative property of multiplication.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 \cdot 16 t \cdot t^{2} + 12 t (72 t) + 12 t \cdot 81 + {(4 t + 9)}^{3}))$

Step 2.7.4.6.6.2

Rewrite using the commutative property of multiplication.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 \cdot 16 t \cdot t^{2} + 12 \cdot 72 t \cdot t + 12 t \cdot 81 + {(4 t + 9)}^{3}))$

Step 2.7.4.6.6.3

Multiply $81$ by $12$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 \cdot 16 t \cdot t^{2} + 12 \cdot 72 t \cdot t + 972 t + {(4 t + 9)}^{3}))$

Step 2.7.4.6.7

Simplify each term.

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Step 2.7.4.6.7.1

Multiply $t$ by $t^{2}$ by adding the exponents.

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Step 2.7.4.6.7.1.1

Move $t^{2}$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 \cdot 16 (t^{2} t) + 12 \cdot 72 t \cdot t + 972 t + {(4 t + 9)}^{3}))$

Step 2.7.4.6.7.1.2

Multiply $t^{2}$ by $t$ .

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Step 2.7.4.6.7.1.2.1

Raise $t$ to the power of $1$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 \cdot 16 (t^{2} t^{1}) + 12 \cdot 72 t \cdot t + 972 t + {(4 t + 9)}^{3}))$

Step 2.7.4.6.7.1.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 \cdot 16 t^{2 + 1} + 12 \cdot 72 t \cdot t + 972 t + {(4 t + 9)}^{3}))$

Step 2.7.4.6.7.1.3

Add $2$ and $1$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (12 \cdot 16 t^{3} + 12 \cdot 72 t \cdot t + 972 t + {(4 t + 9)}^{3}))$

Step 2.7.4.6.7.2

Multiply $12$ by $16$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 12 \cdot 72 t \cdot t + 972 t + {(4 t + 9)}^{3}))$

Step 2.7.4.6.7.3

Multiply $t$ by $t$ by adding the exponents.

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Step 2.7.4.6.7.3.1

Move $t$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 12 \cdot 72 (t \cdot t) + 972 t + {(4 t + 9)}^{3}))$

Step 2.7.4.6.7.3.2

Multiply $t$ by $t$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 12 \cdot 72 t^{2} + 972 t + {(4 t + 9)}^{3}))$

Step 2.7.4.6.7.4

Multiply $12$ by $72$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 864 t^{2} + 972 t + {(4 t + 9)}^{3}))$

Step 2.7.4.6.8

Use the Binomial Theorem.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 864 t^{2} + 972 t + {(4 t)}^{3} + 3 {(4 t)}^{2} \cdot 9 + 3 (4 t) \cdot 9^{2} + 9^{3}))$

Step 2.7.4.6.9

Simplify each term.

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Step 2.7.4.6.9.1

Apply the product rule to $4 t$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 864 t^{2} + 972 t + 4^{3} t^{3} + 3 {(4 t)}^{2} \cdot 9 + 3 (4 t) \cdot 9^{2} + 9^{3}))$

Step 2.7.4.6.9.2

Raise $4$ to the power of $3$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 864 t^{2} + 972 t + 64 t^{3} + 3 {(4 t)}^{2} \cdot 9 + 3 (4 t) \cdot 9^{2} + 9^{3}))$

Step 2.7.4.6.9.3

Apply the product rule to $4 t$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 864 t^{2} + 972 t + 64 t^{3} + 3 (4^{2} t^{2}) \cdot 9 + 3 (4 t) \cdot 9^{2} + 9^{3}))$

Step 2.7.4.6.9.4

Raise $4$ to the power of $2$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 864 t^{2} + 972 t + 64 t^{3} + 3 (16 t^{2}) \cdot 9 + 3 (4 t) \cdot 9^{2} + 9^{3}))$

Step 2.7.4.6.9.5

Multiply $16$ by $3$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 864 t^{2} + 972 t + 64 t^{3} + 48 t^{2} \cdot 9 + 3 (4 t) \cdot 9^{2} + 9^{3}))$

Step 2.7.4.6.9.6

Multiply $9$ by $48$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 864 t^{2} + 972 t + 64 t^{3} + 432 t^{2} + 3 (4 t) \cdot 9^{2} + 9^{3}))$

Step 2.7.4.6.9.7

Multiply $4$ by $3$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 864 t^{2} + 972 t + 64 t^{3} + 432 t^{2} + 12 t \cdot 9^{2} + 9^{3}))$

Step 2.7.4.6.9.8

Raise $9$ to the power of $2$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 864 t^{2} + 972 t + 64 t^{3} + 432 t^{2} + 12 t \cdot 81 + 9^{3}))$

Step 2.7.4.6.9.9

Multiply $81$ by $12$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 864 t^{2} + 972 t + 64 t^{3} + 432 t^{2} + 972 t + 9^{3}))$

Step 2.7.4.6.9.10

Raise $9$ to the power of $3$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (192 t^{3} + 864 t^{2} + 972 t + 64 t^{3} + 432 t^{2} + 972 t + 729))$

Step 2.7.4.7

Add $192 t^{3}$ and $64 t^{3}$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (256 t^{3} + 864 t^{2} + 972 t + 432 t^{2} + 972 t + 729))$

Step 2.7.4.8

Add $864 t^{2}$ and $432 t^{2}$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (256 t^{3} + 1296 t^{2} + 972 t + 972 t + 729))$

Step 2.7.4.9

Add $972 t$ and $972 t$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + (12 t + 9) (256 t^{3} + 1296 t^{2} + 1944 t + 729))$

Step 2.7.4.10

Expand $(12 t + 9) (256 t^{3} + 1296 t^{2} + 1944 t + 729)$ by multiplying each term in the first expression by each term in the second expression.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 12 t (256 t^{3}) + 12 t (1296 t^{2}) + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11

Simplify each term.

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Step 2.7.4.11.1

Rewrite using the commutative property of multiplication.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 12 \cdot 256 t \cdot t^{3} + 12 t (1296 t^{2}) + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.2

Multiply $t$ by $t^{3}$ by adding the exponents.

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Step 2.7.4.11.2.1

Move $t^{3}$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 12 \cdot 256 (t^{3} t) + 12 t (1296 t^{2}) + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.2.2

Multiply $t^{3}$ by $t$ .

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Step 2.7.4.11.2.2.1

Raise $t$ to the power of $1$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 12 \cdot 256 (t^{3} t^{1}) + 12 t (1296 t^{2}) + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.2.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 12 \cdot 256 t^{3 + 1} + 12 t (1296 t^{2}) + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.2.3

Add $3$ and $1$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 12 \cdot 256 t^{4} + 12 t (1296 t^{2}) + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.3

Multiply $12$ by $256$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 12 t (1296 t^{2}) + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.4

Rewrite using the commutative property of multiplication.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 12 \cdot 1296 t \cdot t^{2} + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.5

Multiply $t$ by $t^{2}$ by adding the exponents.

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Step 2.7.4.11.5.1

Move $t^{2}$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 12 \cdot 1296 (t^{2} t) + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.5.2

Multiply $t^{2}$ by $t$ .

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Step 2.7.4.11.5.2.1

Raise $t$ to the power of $1$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 12 \cdot 1296 (t^{2} t^{1}) + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.5.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 12 \cdot 1296 t^{2 + 1} + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.5.3

Add $2$ and $1$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 12 \cdot 1296 t^{3} + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.6

Multiply $12$ by $1296$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 15552 t^{3} + 12 t (1944 t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.7

Rewrite using the commutative property of multiplication.

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 15552 t^{3} + 12 \cdot 1944 t \cdot t + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.8

Multiply $t$ by $t$ by adding the exponents.

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Step 2.7.4.11.8.1

Move $t$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 15552 t^{3} + 12 \cdot 1944 (t \cdot t) + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.8.2

Multiply $t$ by $t$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 15552 t^{3} + 12 \cdot 1944 t^{2} + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.9

Multiply $12$ by $1944$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 15552 t^{3} + 23328 t^{2} + 12 t \cdot 729 + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.10

Multiply $729$ by $12$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 15552 t^{3} + 23328 t^{2} + 8748 t + 9 (256 t^{3}) + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.11

Multiply $256$ by $9$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 15552 t^{3} + 23328 t^{2} + 8748 t + 2304 t^{3} + 9 (1296 t^{2}) + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.12

Multiply $1296$ by $9$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 15552 t^{3} + 23328 t^{2} + 8748 t + 2304 t^{3} + 11664 t^{2} + 9 (1944 t) + 9 \cdot 729)$

Step 2.7.4.11.13

Multiply $1944$ by $9$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 15552 t^{3} + 23328 t^{2} + 8748 t + 2304 t^{3} + 11664 t^{2} + 17496 t + 9 \cdot 729)$

Step 2.7.4.11.14

Multiply $9$ by $729$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 15552 t^{3} + 23328 t^{2} + 8748 t + 2304 t^{3} + 11664 t^{2} + 17496 t + 6561)$

Step 2.7.4.12

Add $15552 t^{3}$ and $2304 t^{3}$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 17856 t^{3} + 23328 t^{2} + 8748 t + 11664 t^{2} + 17496 t + 6561)$

Step 2.7.4.13

Add $23328 t^{2}$ and $11664 t^{2}$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 17856 t^{3} + 34992 t^{2} + 8748 t + 17496 t + 6561)$

Step 2.7.4.14

Add $8748 t$ and $17496 t$ .

$2 (768 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 3072 t^{4} + 17856 t^{3} + 34992 t^{2} + 26244 t + 6561)$

Step 2.7.5

Add $768 t^{4}$ and $3072 t^{4}$ .

$2 (3840 t^{4} + 5184 t^{3} + 11664 t^{2} + 8748 t + 17856 t^{3} + 34992 t^{2} + 26244 t + 6561)$

Step 2.7.6

Add $5184 t^{3}$ and $17856 t^{3}$ .

$2 (3840 t^{4} + 23040 t^{3} + 11664 t^{2} + 8748 t + 34992 t^{2} + 26244 t + 6561)$

Step 2.7.7

Add $11664 t^{2}$ and $34992 t^{2}$ .

$2 (3840 t^{4} + 23040 t^{3} + 46656 t^{2} + 8748 t + 26244 t + 6561)$

Step 2.7.8

Add $8748 t$ and $26244 t$ .

$2 (3840 t^{4} + 23040 t^{3} + 46656 t^{2} + 34992 t + 6561)$

Step 2.7.9

Apply the distributive property.

$2 (3840 t^{4}) + 2 (23040 t^{3}) + 2 (46656 t^{2}) + 2 (34992 t) + 2 \cdot 6561$

Step 2.7.10

Simplify.

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Step 2.7.10.1

Multiply $3840$ by $2$ .

$7680 t^{4} + 2 (23040 t^{3}) + 2 (46656 t^{2}) + 2 (34992 t) + 2 \cdot 6561$

Step 2.7.10.2

Multiply $23040$ by $2$ .

$7680 t^{4} + 46080 t^{3} + 2 (46656 t^{2}) + 2 (34992 t) + 2 \cdot 6561$

Step 2.7.10.3

Multiply $46656$ by $2$ .

$7680 t^{4} + 46080 t^{3} + 93312 t^{2} + 2 (34992 t) + 2 \cdot 6561$

Step 2.7.10.4

Multiply $34992$ by $2$ .

$7680 t^{4} + 46080 t^{3} + 93312 t^{2} + 69984 t + 2 \cdot 6561$

Step 2.7.10.5

Multiply $2$ by $6561$ .

$f'' (t) = 7680 t^{4} + 46080 t^{3} + 93312 t^{2} + 69984 t + 13122$

Step 3

The second derivative of $g (t)$ with respect to $t$ is $7680 t^{4} + 46080 t^{3} + 93312 t^{2} + 69984 t + 13122$ .

$7680 t^{4} + 46080 t^{3} + 93312 t^{2} + 69984 t + 13122$