Question

Упростить
(x+y^2)^2 - (y^2-2)*(y^2+2)-2xy^2

Answer 1

x^2+2xy^2+y^4-(y^4-4)-2xy^2-2xy^2;

x^2+y^4-(y^4-4);

x^2+y^4-y^4+4;

x^2+4;