SOLUTION: Is (√x)^2=x an identity (true for all values of x)? Please explain

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Question 37077This question is from textbook
: Is (√x)^2=x an identity (true for all values of x)? Please explain This question is from textbook

Found 2 solutions by wuwei96815, jcmtnez:
Answer by wuwei96815(245) About Me  (Show Source):
You can put this solution on YOUR website!
(x)^2 = x is only true when x=1

Answer by jcmtnez(53) About Me  (Show Source):
You can put this solution on YOUR website!
Sorry but I don't think so. The formula (√x)^2=x is at least an identy for all positive values, in which x is greater or equal to zero. If you only use integers the formula is an identity only for positive value, but for all natural numbers, if you use also negative value the formula will be an identity using complex numbers. It depends on the domain and range that you choose, real or complex numbers.