ex 9, punctul d) va rooooggg

Răspuns:
Salut
d)2x^3 + x^2 -5x+2=
= 2x^3 + 2x^2 +3x^2 -3x-2x+2=
= 2x^2(x-1)+3x(x-1)-2x(x-1)=
= (x-1)*(2x^2+3x-2)=
= (x-1)*(2x^2 +4x-x-2)=
= (x-1)*[2x*(x+2)-(x+2)]=
= (x-1)*(x+2)*(2x-1)
sper sa fie corect.