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Math Help - Show an Expression is a Multiple of 4

  1. #1
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    Show an Expression is a Multiple of 4

    hi,

    m is an integer.

    show that (m+2)^2-m^2-4 is a multiple of 4.

    i really don't know how to do this so could someone please try and explain this sort of question to me please?!

    thanks!
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  2. #2
    MHF Contributor FernandoRevilla's Avatar
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    Quote Originally Posted by andyboy179 View Post
    hi,m is an integer. show that (m+2)^2-m^2-4 is a multiple of 4.

    (m+2)^2-m^2-4=...=4m
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