Try this GRE question that tests your ability to rewrite exponents terms in commonly used bases and simplify them by factoring terms.

$\sqrt{\dfrac{8^{10}+4^{10}}{8^4+4^{11}}}=$

- $\quad \sqrt{2} $
- $\quad 16 $
- $\quad 32 $
- $\quad 12^{2/3} $
- $\quad 512.5 $

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