SOLUTION: is square root x^2 = x an identity?

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Question 82865: is square root x^2 = x an identity?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
No it is not. To prove this let x=-3 to get

sqrt%28%28-3%29%5E2%29=-3

sqrt%289%29=-3

3=-3

Since this expression is not true, it is not an identity.