Question

(p-5)(p+5)
(m-3n)(3n+m)
(x-3)(x+3)
(7x-2)(2+7x)
(2m+n)(2m-n)
(x²-2)(x²+2)
(a²+1)(1-a²)
(2x+3y)(3y-2x²)

Answer 1

(p-5)(p+5)=р²-25
(m-3n)(3n+m)=(m-3n)(m-3n)=m²-9n²
(x-3)(x+3)=х³-9
(7x-2)(2+7x)=(7x-2)(7x+2)=49х²-4
(2m+n)(2m-n)=4m²-n²
(x²-2)(x²+2)=х⁴-4
(a²+1)(1-a²)=(1+a²)(1-a²)=1-а⁴
(2x+3y)(3y-2x²)
Без значений только так

Answer 2

Все так,вроде