Question

Срочно!!!! Даю 50б!!!!

Answer 1

1) (2m+3n)²

2) (t-2s)²

3) (2m+3n)(2m-3n)

4) (3m)²-(4n)²=9m²-16n²=(3m-4n)(3m+4n)

5) (x+y)²-(x-y)²

6) (x+y)²+(x-y)²