Question

(x-1)^2-4 (x+1)^2-6 (x+1)(x-1) упростить выражение

Answer 1

(x-1)^2-4 (x+1)^2-6 (x+1)(x-1) = x^2-2x+1-4(x^2+2x+1)-6(x^2-1)=x^2-2x+1-4x^2-8x-4-6x^2+6= -9x^2-10x+3