Question

1) (m+n)(m-n)
2)(x+5)(x-5)
3)(a-3)(3+a)
4)(y+2)(2-y)

Answer 1

м2-n2;x2-25;a2-9;y2-4.

Answer 2

lf

Answer 3

да

Answer 4

ниже

Answer 5

так???