Question

Упростить выражение
(x-1)^2 -(x+3)(x-3)

Answer 1

(x-1)^2-(x+3)(x-3)= x^2-2x+1-(x^2-9)=x^2-x^2-2x+1+9=-2x+10.

Answer 2

(x-1)^2-(x+3)(x-3)=x^2-2x+1-(x^2-9)=-2x+10=-2(x-5)