Factor factor x^2-25

factor $x^{2} - 25$

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

$x^{2} - 5^{2}$

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

$(x + 5) (x - 5)$