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Math Help - solutions

  1. #1
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    solutions

    How many solutions exist for this set of equation ?

    ab=1 , bc=2 , ca=8

    A . 1
    B . 2
    C. 3
    D . 6
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  2. #2
    MHF Contributor
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    Talking

    What have you tried so far? You've done something like solve the first and third equations for "a=", expressed "c" in terms of "b", and then solved the second equation for "c=", and... then what?

    Please be complete. Thank you!
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  3. #3
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    Quote Originally Posted by hooke View Post
    How many solutions exist for this set of equation ?

    ab=1 , bc=2 , ca=8

    A . 1
    B . 2
    C. 3
    D . 6
    Hint : a=2 or a=-2.
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