(x^5+x^3)/(x^4-x^2)*(x^5-x^3)/(x^2+x^4)

[latex]\frac{x^5+x^3}{x^4-x^2}\cdot\frac{x^5-x^3}{x^2+x^4}=\frac{x^3\cdot(x^2+1)}{x^2\cdot(x^2-1)}\cdot\frac{x^3\cdot(x^2-1)}{x^2(1+x^2)}= \frac{x^3\cdot x^3}{x^2\cdot x^2}= \frac{x^6}{x^4}=x^2 [/latex]