Question

Помогите решить уравнение.
$frac{2 x^{2}+4x-6 }{ x^{2} -9} =1$

Answer 1

$frac{2 x^{2} +4x-6}{ x^{2} -9}-1=0$
$frac{2 x^{2} +4x-6- x^{2} +9}{ x^{2} -9}=0$
$frac{ x^{2} +4x+3}{ x^{2} -9}=0$
$left { {{x^{2} +4x+3=0} atop { x^{2} -9 neq 0}} right.$
$left { {{ x_{1}=-1; x_{2}=-3 } atop {x neq 3;x neq -3}} right.$
x=-1