Radicals and Absolute Value: why do you sometimes need abs-v

eouirai

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Nov 29, 2008
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How come sometimes when you find the square root of something, you need absolute value signs? Why is the square root of x^6, |x^3|?
 

Loren

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Aug 28, 2007
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Re: Radicals and Absolute Value

eouirai said:
How come sometimes when you find the square root of something, you need absolute value signs? Why is the square root of x^6, |x^3|?
If x is a negative number, is \(\displaystyle \sqrt{x^6}\) positive or negative?

If x is a negative number is x[sup:17vk1jed]3[/sup:17vk1jed] positive or negative?
 
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