Algebra Examples

$y^{2} - 36$

Step 1

Rewrite $36$ as $6^{2}$ .

$y^{2} - 6^{2}$

Step 2

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = y$ and $b = 6$ .

$(y + 6) (y - 6)$