Algebra Examples

$\sqrt{49 {(x^{3} + 4)}^{6}}$

Step 1

Rewrite $49 {(x^{3} + 4)}^{6}$ as ${(7 {(x^{3} + 4)}^{3})}^{2}$ .

$\sqrt{{(7 {(x^{3} + 4)}^{3})}^{2}}$

Step 2

Pull terms out from under the radical.

$| 7 {(x^{3} + 4)}^{3} |$

Step 3

Use the Binomial Theorem.

$| 7 ({(x^{3})}^{3} + 3 {(x^{3})}^{2} \cdot 4 + 3 x^{3} \cdot 4^{2} + 4^{3}) |$

Step 4

Simplify each term.

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Step 4.1

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

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Step 4.1.1

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

$| 7 (x^{3 \cdot 3} + 3 {(x^{3})}^{2} \cdot 4 + 3 x^{3} \cdot 4^{2} + 4^{3}) |$

Step 4.1.2

Multiply $3$ by $3$ .

$| 7 (x^{9} + 3 {(x^{3})}^{2} \cdot 4 + 3 x^{3} \cdot 4^{2} + 4^{3}) |$

Step 4.2

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

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Step 4.2.1

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

$| 7 (x^{9} + 3 x^{3 \cdot 2} \cdot 4 + 3 x^{3} \cdot 4^{2} + 4^{3}) |$

Step 4.2.2

Multiply $3$ by $2$ .

$| 7 (x^{9} + 3 x^{6} \cdot 4 + 3 x^{3} \cdot 4^{2} + 4^{3}) |$

Step 4.3

Multiply $4$ by $3$ .

$| 7 (x^{9} + 12 x^{6} + 3 x^{3} \cdot 4^{2} + 4^{3}) |$

Step 4.4

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

$| 7 (x^{9} + 12 x^{6} + 3 x^{3} \cdot 16 + 4^{3}) |$

Step 4.5

Multiply $16$ by $3$ .

$| 7 (x^{9} + 12 x^{6} + 48 x^{3} + 4^{3}) |$

Step 4.6

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

$| 7 (x^{9} + 12 x^{6} + 48 x^{3} + 64) |$

Step 5

Apply the distributive property.

$| 7 x^{9} + 7 (12 x^{6}) + 7 (48 x^{3}) + 7 \cdot 64 |$

Step 6

Simplify.

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Step 6.1

Multiply $12$ by $7$ .

$| 7 x^{9} + 84 x^{6} + 7 (48 x^{3}) + 7 \cdot 64 |$

Step 6.2

Multiply $48$ by $7$ .

$| 7 x^{9} + 84 x^{6} + 336 x^{3} + 7 \cdot 64 |$

Step 6.3

Multiply $7$ by $64$ .

$| 7 x^{9} + 84 x^{6} + 336 x^{3} + 448 |$