# How do you find all the zeros of x^2 + x -72 = 0?

Mar 21, 2016

$x = - 9 \mathmr{and} x = 8$

#### Explanation:

${x}^{2} + x - 72 = 0$
$\left(x + 9\right) \left(x - 8\right) = 0$
$x = - 9 \mathmr{and} x = 8$