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anonymous

  • one year ago

Divide 3x2 − 11x − 4 by x − 4.

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  1. sloppycanada
    • one year ago
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    I assume you're solving for "x"?

  2. ZeHanz
    • one year ago
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    Are you familiar with long division and/or synthetic division?

  3. ZeHanz
    • one year ago
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    Personally, I would at first try to avoid division and try to factor. There is a neat trick for factoring things like 3x^2 - 11x - 4. Normally this is a bit tricky, because of the 3 in front of x^2. The trick is this: 1. remove the 3 and multiply it with the last term: x^2 - 11x - 12 (something different!) 2. factor this one: (x + 1)(x - 12). 3. divide 1 and -12 by 3: (x + 1/3)(x - 4) 4. if there are fractions, remove these by multiplying again: (3x + 1)(x - 4). Now you have the right factorisation of 3x^2 - 11x - 4. This means that dividing it by x - 4 gives 3x + 1. Otherwise, you could do the long or synthetic division.

  4. anonymous
    • one year ago
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    thanks man

  5. ZeHanz
    • one year ago
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    yw!

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