(x-1)²-4(x+1)²-6(x+1)(x-1)²

Question

(x-1)²-4(x+1)²-6(x+1)(x-1)²

Answer 1

X²-2x+1-4x²-8x-4(6x+6)(x²-2x+1)=-3x²-10x-3-6x³+12x²-6x-6x²+12x-6=
=-6x³+3x²-4x-9