Algebra Examples

${(2 x^{2} + 3 x y)}^{3}$

Step 1

Use the binomial expansion theorem to find each term. The binomial theorem states ${(a + b)}^{n} = \sum_{k = 0}^{n} n C k \cdot (a^{n - k} b^{k})$ .

$\sum_{k = 0}^{3} \frac{3!}{(3 - k)! k!} \cdot {(2 x^{2})}^{3 - k} \cdot {(3 x y)}^{k}$

Step 2

Expand the summation.

$\frac{3!}{(3 - 0)! 0!} \cdot {(2 x^{2})}^{3 - 0} \cdot {(3 x y)}^{0} + \frac{3!}{(3 - 1)! 1!} \cdot {(2 x^{2})}^{3 - 1} \cdot {(3 x y)}^{1} + \frac{3!}{(3 - 2)! 2!} \cdot {(2 x^{2})}^{3 - 2} \cdot {(3 x y)}^{2} + \frac{3!}{(3 - 3)! 3!} \cdot {(2 x^{2})}^{3 - 3} \cdot {(3 x y)}^{3}$

Step 3

Simplify the exponents for each term of the expansion.

$1 \cdot {(2 x^{2})}^{3} \cdot {(3 x y)}^{0} + 3 \cdot {(2 x^{2})}^{2} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4

Simplify each term.

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Step 4.1

Multiply ${(2 x^{2})}^{3}$ by $1$ .

${(2 x^{2})}^{3} \cdot {(3 x y)}^{0} + 3 \cdot {(2 x^{2})}^{2} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.2

Apply the product rule to $2 x^{2}$ .

$2^{3} {(x^{2})}^{3} \cdot {(3 x y)}^{0} + 3 \cdot {(2 x^{2})}^{2} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.3

Raise $2$ to the power of $3$ .

$8 {(x^{2})}^{3} \cdot {(3 x y)}^{0} + 3 \cdot {(2 x^{2})}^{2} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.4

Multiply the exponents in ${(x^{2})}^{3}$ .

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Step 4.4.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$8 x^{2 \cdot 3} \cdot {(3 x y)}^{0} + 3 \cdot {(2 x^{2})}^{2} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.4.2

Multiply $2$ by $3$ .

$8 x^{6} \cdot {(3 x y)}^{0} + 3 \cdot {(2 x^{2})}^{2} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.5

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 4.5.1

Apply the product rule to $3 x y$ .

$8 x^{6} \cdot ({(3 x)}^{0} y^{0}) + 3 \cdot {(2 x^{2})}^{2} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.5.2

Apply the product rule to $3 x$ .

$8 x^{6} \cdot (3^{0} x^{0} y^{0}) + 3 \cdot {(2 x^{2})}^{2} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.6

Multiply $x^{6}$ by $x^{0}$ by adding the exponents.

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Step 4.6.1

Move $x^{0}$ .

$8 (x^{0} x^{6}) \cdot (3^{0} y^{0}) + 3 \cdot {(2 x^{2})}^{2} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.6.2

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

$8 x^{0 + 6} \cdot (3^{0} y^{0}) + 3 \cdot {(2 x^{2})}^{2} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.6.3

Add $0$ and $6$ .

$8 x^{6} \cdot (3^{0} y^{0}) + 3 \cdot {(2 x^{2})}^{2} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.7

Simplify $8 x^{6} \cdot (3^{0} y^{0})$ .

$8 x^{6} + 3 \cdot {(2 x^{2})}^{2} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.8

Apply the product rule to $2 x^{2}$ .

$8 x^{6} + 3 \cdot (2^{2} {(x^{2})}^{2}) \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.9

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

$8 x^{6} + 3 \cdot (4 {(x^{2})}^{2}) \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.10

Multiply the exponents in ${(x^{2})}^{2}$ .

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Step 4.10.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$8 x^{6} + 3 \cdot (4 x^{2 \cdot 2}) \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.10.2

Multiply $2$ by $2$ .

$8 x^{6} + 3 \cdot (4 x^{4}) \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.11

Multiply $4$ by $3$ .

$8 x^{6} + 12 x^{4} \cdot {(3 x y)}^{1} + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.12

Simplify.

$8 x^{6} + 12 x^{4} \cdot (3 x y) + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.13

Multiply $x^{4}$ by $x$ by adding the exponents.

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Step 4.13.1

Move $x$ .

$8 x^{6} + 12 (x \cdot x^{4}) \cdot (3 y) + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.13.2

Multiply $x$ by $x^{4}$ .

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Step 4.13.2.1

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

$8 x^{6} + 12 (x^{1} x^{4}) \cdot (3 y) + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.13.2.2

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

$8 x^{6} + 12 x^{1 + 4} \cdot (3 y) + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.13.3

Add $1$ and $4$ .

$8 x^{6} + 12 x^{5} \cdot (3 y) + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.14

Rewrite using the commutative property of multiplication.

$8 x^{6} + 12 \cdot 3 x^{5} y + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.15

Multiply $12$ by $3$ .

$8 x^{6} + 36 x^{5} y + 3 \cdot {(2 x^{2})}^{1} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.16

Simplify.

$8 x^{6} + 36 x^{5} y + 3 \cdot (2 x^{2}) \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.17

Multiply $2$ by $3$ .

$8 x^{6} + 36 x^{5} y + 6 x^{2} \cdot {(3 x y)}^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.18

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 4.18.1

Apply the product rule to $3 x y$ .

$8 x^{6} + 36 x^{5} y + 6 x^{2} \cdot ({(3 x)}^{2} y^{2}) + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.18.2

Apply the product rule to $3 x$ .

$8 x^{6} + 36 x^{5} y + 6 x^{2} \cdot (3^{2} x^{2} y^{2}) + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.19

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

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Step 4.19.1

Move $x^{2}$ .

$8 x^{6} + 36 x^{5} y + 6 (x^{2} x^{2}) \cdot (3^{2} y^{2}) + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.19.2

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

$8 x^{6} + 36 x^{5} y + 6 x^{2 + 2} \cdot (3^{2} y^{2}) + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.19.3

Add $2$ and $2$ .

$8 x^{6} + 36 x^{5} y + 6 x^{4} \cdot (3^{2} y^{2}) + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.20

Rewrite using the commutative property of multiplication.

$8 x^{6} + 36 x^{5} y + 6 \cdot 3^{2} x^{4} y^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.21

Raise $3$ to the power of $2$ .

$8 x^{6} + 36 x^{5} y + 6 \cdot 9 x^{4} y^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.22

Multiply $6$ by $9$ .

$8 x^{6} + 36 x^{5} y + 54 x^{4} y^{2} + 1 \cdot {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.23

Multiply ${(2 x^{2})}^{0}$ by $1$ .

$8 x^{6} + 36 x^{5} y + 54 x^{4} y^{2} + {(2 x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.24

Apply the product rule to $2 x^{2}$ .

$8 x^{6} + 36 x^{5} y + 54 x^{4} y^{2} + 2^{0} {(x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.25

Anything raised to $0$ is $1$ .

$8 x^{6} + 36 x^{5} y + 54 x^{4} y^{2} + 1 {(x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.26

Multiply ${(x^{2})}^{0}$ by $1$ .

$8 x^{6} + 36 x^{5} y + 54 x^{4} y^{2} + {(x^{2})}^{0} \cdot {(3 x y)}^{3}$

Step 4.27

Multiply the exponents in ${(x^{2})}^{0}$ .

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Step 4.27.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$8 x^{6} + 36 x^{5} y + 54 x^{4} y^{2} + x^{2 \cdot 0} \cdot {(3 x y)}^{3}$

Step 4.27.2

Multiply $2$ by $0$ .

$8 x^{6} + 36 x^{5} y + 54 x^{4} y^{2} + x^{0} \cdot {(3 x y)}^{3}$

Step 4.28

Anything raised to $0$ is $1$ .

$8 x^{6} + 36 x^{5} y + 54 x^{4} y^{2} + 1 \cdot {(3 x y)}^{3}$

Step 4.29

Multiply ${(3 x y)}^{3}$ by $1$ .

$8 x^{6} + 36 x^{5} y + 54 x^{4} y^{2} + {(3 x y)}^{3}$

Step 4.30

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 4.30.1

Apply the product rule to $3 x y$ .

$8 x^{6} + 36 x^{5} y + 54 x^{4} y^{2} + {(3 x)}^{3} y^{3}$

Step 4.30.2

Apply the product rule to $3 x$ .

$8 x^{6} + 36 x^{5} y + 54 x^{4} y^{2} + 3^{3} x^{3} y^{3}$

Step 4.31

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

$8 x^{6} + 36 x^{5} y + 54 x^{4} y^{2} + 27 x^{3} y^{3}$