Question

x^2×(x/y-y/x)×(y/x+x/y)xy^2​

Answer 1

Answer:

$x^2(\frac{x}{y}-\frac{y}{x})*(\frac{y}{x} +\frac{x}{y})xy^2\\\\x^2(\frac{x^2-y^2}{xy})*(\frac{y^2+x^2}{xy})xy^2\\\\x^2(x^2-y^2)(x^2+y^2)\\\\x^2(x^4-y^4)$