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Math Help - Factorising algebraic expressions

  1. #1
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    Factorising algebraic expressions

    This is what I have done so far but feel it might be wrong.

    Factorise the following:

    1) Xsquared - Ysquared = (X - Y) (X + Y)

    2) (C + D)squared - Dsquared = C (C + 2D)

    3) 2Wsquared + W - 3 = how do you do this one again?
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  2. #2
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    So far it looks right.

    For the last one, it's something like (2W + ...)(W - ...)
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  3. #3
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    (2W + 3) (W - 2) got it!
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  4. #4
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    Quote Originally Posted by Natasha1 View Post
    (2W + 3) (W - 2) got it!
    (2W + 3)(W - 2) = 2W^2 - W - 6

    Really close though.
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  5. #5
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    Snowtea's explanation is going well, and my comment
    was only going to spoil it (complete solution and all)...
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