Question

Помогите пж срочно!!!!!

Answer 1

Ответ:

1.

1)(p+8)^2=p^2+16p+64

2)(10x-3y)^2=100x^2-60xy+9y^2

3)(x-9)(x+9)=x^2-81

4)(4m+7n)(7n-4m)=-16m^2+49n^2