Question

descompuneti in factori folosind metoda facrorului comun:
a) (3x+4)(x-y)+(x-y)(x+1) =
b) x(b-c)+y(c-b)-z(b-c) =
c) a(b-1)+c(1-b)-b+1 =

Answer 1

a)(x-y)(3x-4+x-y)=(x-y)(4x-4-y)
b)x(b-c)-y(b-c)-z(b-c)=(b-c)(x-y-z)
c)a(b-1)-c(b-1)-(b-1)=(b-1)(a-c-1)