Mooduck3 (2-х)(2+х)-(2+х)²=(2-х)(2+х) - (2+х)(2+х)=(2+х)(2-х - 2 - х)= -2х(2+х)

гюйс

Verified answer

(2-x)(2+x) - (2+x)² = (2+x)((2-x) - (2+x)) = (2+x)(-2x) = -4x - 2x²