Question

Scoateti factor comun pe (x-3):

a) (x+1)(x-3)+(x-3)(5x_2)=
b) (2x+5)(x-3)+(x-3)(x-2)=
c) (3x-1)(x-3)+(x-3)=
d) (x-3)(x-2)-(x-3)=

Answer 1

a)(x-3)(x+1+5x-2)=(x-3)(6x-1)
b)(x-3)(2x+5+x-2)=(x-3)(3x+3)=3(x-3)(x+1)
c)(x-3)(3x-1+1)=3x(x-3)
d)(x-3)(x-2-1)=(x-3)(x-3)=(x-3)²