Question

Descompuneti in factori:a)(x+1)(x+2)+(x+2)(x+3)
b)a(a+b)-(2a+1)(a+b)
c) x(3x²+2)+2x(2+3x²)
d) (2x-3)²-5x(2x-3)

Answer 1

a)(x+2)(x+1+x+3)=(x+2)(2x+4)=2(x+2)²
b)(a+b)(a-2a+1)=(a+b)(1-a)
c)(3x²+2)(x+2x)=3x(3x²+2)
d)(2x-3)(2x-3-5x)=(2x-3)(-3x-3)=(-3)(2x-3)(x+1)