Simplify $\frac{5\sqrt{2} + \sqrt{50}}{\sqrt{8}}$.

$\sqrt{50} = 5\sqrt{2}$ and $\sqrt{8} = 2\sqrt{2}$, so the expression becomes $\frac{5\sqrt{2} + 5\sqrt{2}}{2\sqrt{2}} = \frac{10\sqrt{2}}{2\sqrt{2}} = 5$. Errors occur when candidates fail to simplify the surds before operating.