How do I simplify [math]\frac{((a^{-3}) (b^{1/2}))^{-4}}{((a^{1/3}) (b^3))^{-6}}[/math] using only positive exponents?
How do I simplify [math] \frac{-6x^{4}-4x^{2}+2}{(x^{2}+1)^{4}}[/math] to [math]\frac{2-6x^{2}}{(x^{2}+1)^{3}}[/math]?