(x-2)(x+2)-(x+1) ² = ?

(x-2)(x+2)-(x+1) ² =x²-4-x²-2x-1=-2x-5

(x-2)(x+2)-(x+1) ² = x²-4-x²+2x-1=2x-5

(x-2)(x+2)-(x+1) ² = x²+2x-2x-4- (x²+2x+1²)= x²+2x-2x-4-x²-2x-1=-5-2x