Answer
{$-10,6$}
Work Step by Step
Factoring the equation and setting the factors equal to zero, we obtain:
$x^{2}+4x=60$
$x^{2}+4x-60=0$
$x^{2}-6x+10x-60=0$
$x(x-6)+10(x-6)=0$
$(x-6)(x+10)=0$
$(x-6)=0$ or $(x+10)=0$
$x=6$ or $x=-10$
Therefore, the solution set is {$-10,6$}.
