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12th grade

posted by on .

can anyone explain how to divide in algebra? I have this problem:
(15x2-24+9)/(3x-3)
I am not looking for someone to give me the answer straight out I just need to know how to get there.

  • 12th grade - ,

    Start in the same way as you would do long division.

    Set it up as
    _________
    (3x-3)|15x2-24x+9

    then how many times does 3x go into 15x^2, which is 5x

    5x
    _________
    (3x-3)|15x2-24x+9

    15x2-15x (from 5x times (3x-3)


    subtract

    5x
    _________
    (3x-3)|15x2-24x+9

    15x2-15x
    ________
    -9x+9


    I hope the formatting holds. Is this OK?

  • 12th grade - ,

    The formatting didn't work 8-((

    I hope you get the idea. I'll try again with dots for spaces.

    Start in the same way as you would do long division.

    Set it up as
    ......_________
    (3x-3)|15x2-24x+9

    then how many times does 3x go into 15x^2, which is 5x

    .......5x
    ......._________
    (3x-3)|15x2-24x+9

    .......15x2-15x (from 5x times (3x-3)


    subtract

    .......5x
    ......._________
    (3x-3)|15x2-24x+9

    .......15x2-15x
    ............________
    ............-9x+9

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