Question

(b²-1)(b²+1)-(b²+2)² если b=-3​

Answer 1

Ответ:

$(b²-1)(b²+1)-(b²+2)² = {b}^{2} - {1}^{2} - {b}^{4} - 4 - 4 {b}^{2} = - 5 - 4 {b}^{2} \\ - 5 - 4 \times ( { - 3)}^{2} = - 5 - 4 \times 9 = - 5 - 36 = - 41$