Question

Упростите выражения: (х^2-7у^3)^2+(х^2+7у^3)^2​

Answer 1

(x²-7y³)²+(x²+7y³)²=

=x^4-7x²y³+49y^6  +  x^4+7x²y³+49y^6=

=2x^4+98y^6