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Math Help - Simplyfing dificulties

  1. #1
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    Simplyfing dificulties

    hi there

    ive got a really important maths exam on friday morning and ive just started going through some old maths papers again, and its been such a long time since i done some of it and im slightly stuck on simplifying this;

    a^2 - 3ab * 2a + 6b ab

    any help would be much apreciated

    mike
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  2. #2
    Super Member Quacky's Avatar
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    Is this really the question: a^2 - (3ab)(2a) + 6bab?

    If so, then the first rule I would apply is that x\times x = x^2

    = a^2 - 6a^2b+6b^2a

    Then, you can remove a common factor of a:

    =a(a - 6ab + 6b^2)
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  3. #3
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    sorry i really must apologise i forgot the + sign

    a^2 - 3ab * 2a + 6b + ab

    is it

    thank you for your reply
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  4. #4
    Super Member Quacky's Avatar
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    Quote Originally Posted by madfatman View Post
    sorry i really must apologise i forgot the + sign

    a^2 - 3ab * 2a + 6b + ab

    is it

    thank you for your reply
    a^2 - (3ab)(2a) + 6b + ab

    Start in the same way as before. I don't think there's really a lot you can do with this in its present state though.
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  5. #5
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    this is the trouble i was having, the answer that my lecturer has given me is a^2 - 3ab * 2a + 6b + ab simplyfied is = to (ab) which puzzled me even more
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  6. #6
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    ok i got

    a^2 - (3ab)(2a) + 6b +ab

    a^2 - 6 a^2 b + 6b + ab

    a^2 - b(6 a^2 + 6 + a)

    can anyone simplify that anymore???
    have i gone wrong?

    cheers mike
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