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Math Help - How on earth do I factor with two variables?

  1. #1
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    How on earth do I factor with two variables?

    Hi how do I factor 7x-35y^2
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  2. #2
    Rhymes with Orange Chris L T521's Avatar
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    Quote Originally Posted by Shadowguard5 View Post
    Hi how do I factor 7x-35y^2
    This is the difference between two squares:

    a^2-b^2

    This factors as a^2-b^2=(a+b)(a-b)

    In your problem, we have 7x-35y^2

    Thus, a=\sqrt{7x} and b=\sqrt{35}y

    Plug this into the formula I gave you and see what you get.

    Does this make sense?

    --Chris
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