(sq.root x)^4 = x^2 Why?

Posted on 2011-05-03
Last Modified: 2012-05-11
I don't know the best way to type the square root or radical sign on for this web site.

( Radical sign over x within parenthesis)^4 = x^2

If x is the same as 1, then the square root of 1 is 1, I think. And 1^4 = 1. Why = x^2? Thanks.
Question by:kadin
    LVL 38

    Accepted Solution

    Sqrt is the same as x^(1/2)
    When this is wrapped in ^4 the exponents are multiplied. So 1/2 * 4 = 2

    Author Closing Comment

    Got it. Thanks.

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