Answer
$x=-4$ or $x=1$
Work Step by Step
Subtract $4$ from each side of the equation and factor to obtain:
$x^2+3x-4=0
\\
(x+4)(x-1)=0$
Next, we will apply the Zero-Product Property to obtain:
$x+4=0$ or $x-1=0$
This yields:
$x=-4$ or $x=1$
