x2
x
=0
-8x2-6x
-8x2-6x-1=0
-8x2-6x+2=0
-8x2-6x+5=0
-8x2-6x+9=0
-8x2-6x+14=0
-8x2-6x+20=0
-
2
5
9
14
20