# How do you solve x(3x + 5) = 15 + 5x?

Sep 19, 2016

$x = \pm \sqrt{5}$

#### Explanation:

$3 {x}^{2} + 5 x = 15 + 5 x$

$3 {x}^{2} - 15 = 0$

$3 \left({x}^{2} - 5\right) = 0$

$x = \pm \sqrt{5}$

Hopefully this helps!