SOLUTION: why is the spuare root of -49 and the square root of 49 with the negative sign outside the radical sign not equal?

Question 221079: why is the spuare root of -49 and the square root of 49 with the negative sign outside the radical sign not equal?
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
Square root of -49 is a complex solution. If complex numbers are allowed, the result is 7i.

Negative square root of 49 is -7, a real number.

R^2
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