Question

4)m^6n^2-(m-n^)2

5)x^4y^2-(a^2-b^2)^2 помогите

Answer 1

x^4y^2-(a^2-b^2)^2 = x^4y^2 - a^4 +2a^2b^2 -b^4
m^6n^2-(m-n)^2=m^6n^2-(m^2-2mn+n^2)=m^6n^2-m^2+2mn-n^2 

Answer 2

О спасибо