Question

Descompuneti scotand factor comun:
a (x-2)+ b(x-2)
(x+1)ridicat la puterea a 2 - 5(x+1)

Answer 1

a (x-2)+ b(x-2)=(x-2)(a+b)......... (x+1)^ 2 - 5(x+1)=(x+1)(x+1-5)=(x+1)(x-4)

Answer 2

a) a(x+2)+b(x+2)=
Daca notam x+2=P
aP+bP=P(a+b)=(x-2)(a+b)
b)=x patrat +1+2x-5x-5
x patrat-3x-4
x patrat+x -4x-4
=x(x+1)-4(x+1)
=(x+1)(x-4)