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Math Help - Factorising:Grouping

  1. #1
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    Exclamation Factorising:Grouping

    Hi guys,

    How do I factorise 3y+9z+by+3bz?

    Just explain to me what you would do to factorise it.

    Thanks!
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  2. #2
    MHF Contributor
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    Re: Factorising:Grouping

    Hey Simimano.

    Hint: Try looking for common factors one at a time.

    For example if you factorize by y you get 3y + by = y(3+b). Factorize by z you get 3bz + 9z = z(3b+9).

    Try doing this for different terms and see what you get.

    Also note that ab + ac = a*(b+c).
    Thanks from topsquark and Simimano
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