SOLUTION: square root of 9 squared

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Question 1050218: square root of 9 squared
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%289%5E2%29
sqrt%289%2A9%29
9 OR -9


Why?
Not the same as %28sqrt%289%29%29%5E2.
Squaring and square-rooting may seem like inverse actions, but square root of positive number may be positive number or negative number; but when you square a negative number, result is a positive number.