Evaluate

Question:

 Evaluate $(\sqrt{36} \times \sqrt{-25})$

 

Solution:

We have, $(\sqrt{36} \times \sqrt{-25})$

$=6 \times \sqrt{-1 \times 25}$

$=6 \times(\sqrt{-1} \times \sqrt{25})$

$=6 \times(\sqrt{-1} \times 5)$

$=6 \times 5 i=30 i$

 

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