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    jherman85's Avatar
    jherman85 Posts: 5, Reputation: 1
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    #1

    Apr 3, 2007, 03:21 AM
    math homeework
    The question says to find all ninpermissable replacements that make the radical expressions undefined, I have an awnser but not sure if I am doing it correct.
    it is y the second power minus 16, over y plus 1.

    y^2 -16/y+1
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Apr 3, 2007, 03:38 AM
    The nonpermissable replacements for what?
    jherman85's Avatar
    jherman85 Posts: 5, Reputation: 1
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    #3

    Apr 3, 2007, 03:40 AM
    the nonpermissable replacements that make the radical expression undefined?
    y^2 -16/y+1
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #4

    Apr 3, 2007, 03:45 AM
    Well, y = -1 would be non permissible, that's the only one I can see.

    Does that agree with your answer?
    jherman85's Avatar
    jherman85 Posts: 5, Reputation: 1
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    #5

    Apr 3, 2007, 03:47 AM
    Yes thank you
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    jherman85 Posts: 5, Reputation: 1
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    #6

    Apr 3, 2007, 03:48 AM
    Could you help me with a couple more questions?
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #7

    Apr 3, 2007, 05:50 AM
    Sure post them in new threads, that's what we're here for.
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