Algebra Examples

$y^{2} - 64$

Step 1

Rewrite $64$ as $8^{2}$ .

$y^{2} - 8^{2}$

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 $b = 8$ .

$(y + 8) (y - 8)$