## Algebra 2 Common Core

$-\dfrac{10}{3}$ and $\dfrac{10}{3}$
Note that $\left(\frac{10}{3}\right)^4=\frac{10,000}{81}$ and $\left(-\frac{10}{3}\right)^4=\frac{10,000}{81}$. Thus, the real fourth roots of $\frac{10,000}{81}$ are $-\frac{10}{3}$ and $\frac{10}{3}$.