Question

Evaluate the expression. $2\sqrt[3]{-729}-5$

Answer 1

Evaluate the given expression.

$$\begin{gathered} 2\sqrt[3]{-729}-5=2(-9)-5(\because \mathrm{Evaluate}\mathrm{the}cube\mathrm{root}) \\ =-18-5\mathbf{}\mathbf{} \\ =-23\mathbf{} \end{gathered}$$

Hence, $2\sqrt[3]{-729}-5=-23$.