Question

descompuneți x^3-7x+6​

Answer 1

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