Question

помогите решить примеры
пж пж!!!!!!

Answer 1

1. 2(x-y)+y (x-y)=(2+y)(x-y)
2.5 (a^2-2ab+b^2)=5(a-b)^2
3. 4a^2b (a+b)-12ab^3
4. (3m-3)(3m+3)
5. m^4+2m^2+1=(m^2+1)^2
6. (4-m^2)(4+m^2)