x2
x
=0
-6x2-5x
-6x2-5x-1=0
-6x2-5x+1=0
-6x2-5x+4=0
-6x2-5x+6=0
-6x2-5x+11=0
-6x2-5x+14=0
-6x2-5x+21=0
-
4
6
11
14
21