Question
In Exercises $29-44,$ perform the indicated operations and write the result in standard form. $$5 \sqrt{-16}+3 \sqrt{-81}$$
Step 1
The square root of -16 is 4i (since $\sqrt{-1}$ is represented as 'i' in complex numbers) and the square root of -81 is 9i. So, the expression becomes: $$ 5 \cdot 4i + 3 \cdot 9i $$ Show more…
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