SOLUTION: Hi, my teacher has asked us to determine whether the sqrt of - is rational or irrational. How are we supposed to determine that:? Thanks for your help.

SOLUTION: Hi, my teacher has asked us to determine whether the sqrt of - is rational or irrational. How are we supposed to determine that:? Thanks for your help.

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Question 87355: Hi, my teacher has asked us to determine whether the sqrt of - is rational or irrational. How are we supposed to determine that:? Thanks for your help.
Answer by rossiv53(27) (Show Source): You can put this solution on YOUR website!
It is irrational because any number squared can never be negative. Negative multiplied by a negative is always positive.
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