x³-7x+6
x³-7x-6=0
x³+x²-x²-7x-6=0
x³+x²-x²-x-6x=0
x²×(x+1)-x²-x-6x-6=0
x²×(x+1)-x×(x+1)-6x-6=0
x²×(x+1)-x×(x+1)-6(x+1)=0
(x+1)×(x²-x-6)=0
(x+1)×(x²+2x-3x-6)=0
(x+1)×(x×(x+2)-3x-6)=0
(x+1)×(x×(x+2)-3(x+2))=0
(x+1)×(x+2)×(x-3)=0
x+1=0
x+2=0
x-3=0
Rezultatul:
x=-2
x=-2
x=3
