SOLUTION: I am trying to answer the below question and I believe the answer is true. √-4 is not a real number.

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Question 1025701: I am trying to answer the below question and I believe the answer is true.
√-4 is not a real number.


Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39620)   (Show Source): You can put this solution on YOUR website!


Try starting from . If x is positive, , which is taught and learned in introductory algebra. is not positive.
If x is negative, then , which is taught and learned in introductory algebra. is not positive.

is an imaginary unit, and is not "Real".
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

I am trying to answer the below question and I believe the answer is true.
√-4 is not a real number.
Yes, you're correct in that  is NOT a real number. Good job! 

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