x=-4 of x=4
x=0 of x=-2
x=$
-\sqrt 6
$ of $
\sqrt 6
$
x=0 of x=$-\frac{1}{2}$
x=-1 of x=-3
x=8 of x=-2
x=2 of x=-6
x=1
x=0 of x=1
x=0
x=3 of x=1
x=0 of x=2