Answers to the Practice Problems are below in random order.
\( \begin{array}{|c|c|c|} \hline \text{-}\dfrac{3}{5},\dfrac{1}{2} & \text{-}3,2 & 2\sqrt{2},\text{-}\sqrt{2} \\ \\ \hline \dfrac{7}{3},5 & \dfrac{1-\sqrt{181}}{6}, \dfrac{1+\sqrt{181}}{6} & 4,16 \\ \\ \hline \text{-}\sqrt{5},\sqrt{5} & 0,9 & \text{-}3,3 \\ \hline \text{-}\dfrac{2}{3},\dfrac{2}{3} & \text{-}2-\sqrt{15},\text{-}2+\sqrt{15} & 7 \\ \\ \hline \end{array} \)
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\( \begin{array}{|c|c|c|} \hline \text{-}\dfrac{3}{5},\dfrac{1}{2} & \text{-}3,2 & 2\sqrt{2},\text{-}\sqrt{2} \\ \\ \hline \dfrac{7}{3},5 & \dfrac{1-\sqrt{181}}{6}, \dfrac{1+\sqrt{181}}{6} & 4,16 \\ \\ \hline \text{-}\sqrt{5},\sqrt{5} & 0,9 & \text{-}3,3 \\ \hline \text{-}\dfrac{2}{3},\dfrac{2}{3} & \text{-}2-\sqrt{15},\text{-}2+\sqrt{15} & 7 \\ \\ \hline \end{array} \)
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