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 Posted: Sat Jan 19, 2008 6:11 pm
I don't get how to simplify this. It looks simplified enough. T-T
square root of x^2/5
Please and thank you. :]
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Posted: Thu Jan 24, 2008 2:14 pm
sqrt(x^2/5) = sqrt(x^2)/sqrt(5) = |x|/sqrt(5) (because if x is negative, squaring it and then taking the square root of it will yield a positive value)
Many teachers will accept |x|/sqrt(5) as a final answer. However, technically standard notation requires you to rationalize the denominator.
|x|/sqrt(5) * sqrt(5)/sqrt(5) = (|x|sqrt(5))/5
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