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Math Help - rqadical confusion

  1. #1
    Jul 2008

    rqadical confusion

    does (x+1)^1/2=x^(1/2)+1?
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  2. #2
    MHF Contributor kalagota's Avatar
    Oct 2007
    Taguig City, Philippines
    Quote Originally Posted by HELLMACH View Post
    does (x+1)^1/2=x^(1/2)+1?
    no in general.. let x=-1..
    LHS = 0 but RHS has no answer in \mathbb{R}.

    In fact, the 2 are only equal if x=0.
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