kill(all);

van=facebook.com/LearningCalculus$

f(x,y):=x^3*sqrt(y) + (4*sqrt(x)*y)^5 = x^8;

g(x,y):=x*sqrt(y)-y^2*sqrt(x)=x^3;

f(0,0);

g(0,0);

is(equal(f(0,0),g(0,0)));

fullratsimp(f(x,y));
fullratsimp(g(x,y));