Question

срочно помогите (a^2+b^2)^2+7a^2b^2

Answer 1

a^4+2a^2b^2+b^4+7a^2b=
a^4+9a^2b^2+b^4

Answer 2

(a^2+b^2)^2+7a^2b^2=a^4+b^4+7a^2b^2