-3 $\sqrt{\-64}$
You asked:
Evaluate the expression: \(-\left( 3 \cdot \sqrt{-64} \right)\)
MathBot Answer:
\[-\left( 3 \cdot \sqrt{-64} \right) = - 24 i\]
\[\begin{aligned}-\left( 3 \cdot \sqrt{-64} \right)& = - 3 \cdot \sqrt{-64}\\& = - 3 \cdot 8 \cdot i\\& = - 24 \cdot i\\& = -24 \cdot i\end{aligned}\]