This one seems exceptionally hard :/
So far I have it down to
But I'm not sure if I'm even going the right route or not
Thanks in advance
ps: answer is x to the power of 1/5
$\displaystyle a^{\frac{m}{n}} = \sqrt[n]{a^{m}} = \left(\sqrt[n]{a}\right)^{m}$
Think in fractional exponents by using the above relations. Then, you should be able to simplify with your exponent laws - specifically: $\displaystyle \frac{a^{m}}{a^{n}} = a^{m-n}$