Verified answer

Ответ:

А) b^2 - b - 11

Б) 2x^2 - 4x + 19

Объяснение:

А) (b-3)(b+3)-(b+2) = b^2 - 9 - (b+2) = b^2 - b - 11

Б) (x-1)(x+1)+(x+1)(x-5)-(x-5)(x+5) = (x^2 - 1) + (x^2 - 4x - 5) - (x^2 - 25) = x^2 + x^2 - x^2 - 4x - 1 - 5 + 25 = 2x^2 - 4x + 19