x2
x
=0
-10x2+17x
-10x2+17x-7=0
-10x2+17x-6=0
-10x2+17x-3=0
-10x2+17x+6=0
-10x2+17x+11=0
-10x2+17x+20=0
-7
-6
-3
6
11
20