Algebra Examples

$y^{3} - 1$

Step 1

Rewrite $1$ as $1^{3}$ .

$y^{3} - 1^{3}$

Step 2

Since both terms are perfect cubes, factor using the difference of cubes formula, $a^{3} - b^{3} = (a - b) (a^{2} + a b + b^{2})$ where $a = y$ and $b = 1$ .

$(y - 1) (y^{2} + y \cdot 1 + 1^{2})$

Step 3

Simplify.

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Step 3.1

Multiply $y$ by $1$ .

$(y - 1) (y^{2} + y + 1^{2})$

Step 3.2

One to any power is one.

$(y - 1) (y^{2} + y + 1)$