tostaraf00081 tostaraf00081

25-09-2020
English

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Question 2
3 pts
Jacob is finding the square root of (-81). He says the answers are 9 and -9. Do
you agree? Explain your reasoning.

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jojoseverything32 jojoseverything32

25-09-2020

No I don’t agree because the square root of a negative number is a complex number. -9 times -9 would be positive 9 and 9 times 9 is positive 9 so the only answer for the square root of -81 is 9i

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