SOLUTION: How do you solve a problem with a negative under a radical sign. For example the square root of -20. is the answer 20i?

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Question 223839: How do you solve a problem with a negative under a radical sign. For example the square root of -20. is the answer 20i?
Found 2 solutions by Alan3354, drj:
Answer by Alan3354(69443) About Me  (Show Source):
Answer by drj(1380) About Me  (Show Source):
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How do you solve a problem with a negative under a radical sign. For example the square root of -20. Is the answer 20i?

You are almost correct.



where i=sqrt%28-1%29

ANSWER: sqrt%28-20%29=i%2A2sqrt%285%29 or sqrt%28-20%29=2sqrt%285%29%2Ai

I hope the above steps were helpful.

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Good luck in your studies!

Respectfully,
Dr J