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Thread: Multiply

  1. #1
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    Multiply

    Multiply
    (-4x-3y) (5y-12z) =


    (x2 + 8x + 7) (x + 6)=
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  2. #2
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    Quote Originally Posted by westdivo View Post
    Multiply
    (-4x-3y) (5y-12z) =
    Use the "distributive law", twice;
    -4x(5y- 12z)- 3y(5y- 12z) is one use of it

    -4x(5y)- 4x(12z)- 3y(5y)- 3y(-12z) is the second. Multiply those.


    (x2 + 8x + 7) (x + 6)=[/QUOTE]
    So this is \frac{x^2+ 8x+ 7}{x+ 6}. It should be obvious that x+ 6 is NOT a factor of the numerator (6 is not a factor of 7) so you cannot reduce it any more.
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  3. #3
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    Talking

    If you're having trouble with the distribution for the multiplication, try another method here.

    To learn how to do polynomial division, try here.
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