Question

Descompuneti in factor scoțând factorul comun:
a) 3x(x-2)-6(x-2)
b) 12(x+3) (totul la a 2) -6x(x+3)

Answer 1

a) 3x(x-2)-6(x-2) = (x-2)(3x-6) =3(x-2)(x-2)=3(x-2)^2
b) 12(x+3) (totul la a 2) -6x(x+3) =6(x+3)[2(x+3)-x]

Answer 2

a) 3x(x-2)-6(x-2)
=(x-2)(3x-6)
=3(x-2)(x-2)
=3(x-2)²
B) 12(x+3)²-6x(x+3)
=(x+3)³(12-6x)
=6(x+3)(2-3x)