Algebra Examples

$8 x^{6} y^{12} + 27$

Step 1

Rewrite $8 x^{6} y^{12}$ as ${(2 x^{2} y^{4})}^{3}$ .

${(2 x^{2} y^{4})}^{3} + 27$

Step 2

Rewrite $27$ as $3^{3}$ .

${(2 x^{2} y^{4})}^{3} + 3^{3}$

Step 3

Since both terms are perfect cubes, factor using the sum of cubes formula, $a^{3} + b^{3} = (a + b) (a^{2} - a b + b^{2})$ where $a = 2 x^{2} y^{4}$ and $b = 3$ .

$(2 x^{2} y^{4} + 3) ({(2 x^{2} y^{4})}^{2} - (2 x^{2} y^{4}) \cdot 3 + 3^{2})$

Step 4

Simplify.

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Step 4.1

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

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Step 4.1.1

Apply the product rule to $2 x^{2} y^{4}$ .

$(2 x^{2} y^{4} + 3) ({(2 x^{2})}^{2} {(y^{4})}^{2} - (2 x^{2} y^{4}) \cdot 3 + 3^{2})$

Step 4.1.2

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

$(2 x^{2} y^{4} + 3) (2^{2} {(x^{2})}^{2} {(y^{4})}^{2} - (2 x^{2} y^{4}) \cdot 3 + 3^{2})$

Step 4.2

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

$(2 x^{2} y^{4} + 3) (4 {(x^{2})}^{2} {(y^{4})}^{2} - (2 x^{2} y^{4}) \cdot 3 + 3^{2})$

Step 4.3

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

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Step 4.3.1

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

$(2 x^{2} y^{4} + 3) (4 x^{2 \cdot 2} {(y^{4})}^{2} - (2 x^{2} y^{4}) \cdot 3 + 3^{2})$

Step 4.3.2

Multiply $2$ by $2$ .

$(2 x^{2} y^{4} + 3) (4 x^{4} {(y^{4})}^{2} - (2 x^{2} y^{4}) \cdot 3 + 3^{2})$

Step 4.4

Multiply the exponents in ${(y^{4})}^{2}$ .

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Step 4.4.1

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

$(2 x^{2} y^{4} + 3) (4 x^{4} y^{4 \cdot 2} - (2 x^{2} y^{4}) \cdot 3 + 3^{2})$

Step 4.4.2

Multiply $4$ by $2$ .

$(2 x^{2} y^{4} + 3) (4 x^{4} y^{8} - (2 x^{2} y^{4}) \cdot 3 + 3^{2})$

Step 4.5

Multiply $2$ by $- 1$ .

$(2 x^{2} y^{4} + 3) (4 x^{4} y^{8} - 2 (x^{2} y^{4}) \cdot 3 + 3^{2})$

Step 4.6

Remove parentheses.

$(2 x^{2} y^{4} + 3) (4 x^{4} y^{8} - 2 x^{2} y^{4} \cdot 3 + 3^{2})$

Step 4.7

Multiply $3$ by $- 2$ .

$(2 x^{2} y^{4} + 3) (4 x^{4} y^{8} - 6 x^{2} y^{4} + 3^{2})$

Step 4.8

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

$(2 x^{2} y^{4} + 3) (4 x^{4} y^{8} - 6 x^{2} y^{4} + 9)$