Factor k^2-100

$k^{2} - 100$

Step 1

Rewrite $100$ as $10^{2}$ .

$k^{2} - 10^{2}$

Step 2

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = k$ and $b = 10$ .

$(k + 10) (k - 10)$