Algebra Examples

$25 - y^{2}$

Step 1

Rewrite $25$ as $5^{2}$ .

$5^{2} - y^{2}$

Step 2

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = 5$ and $b = y$ .

$(5 + y) (5 - y)$