x2
x
=0
6x2+13x
6x2+13x-19=0
6x2+13x-15=0
6x2+13x-8=0
6x2+13x-5=0
6x2+13x+2=0
6x2+13x+5=0
6x2+13x+6=0
6x2+13x+7=0
-19
-15
-8
-5
2
5
6
7