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Cutiepo0

  • 3 years ago

Expand and simplify the first 3 terms of the binomal power: (3y+5)^9 PLEASE HELP!!

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  1. mathteacher1729
    • 3 years ago
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    Do you know the binomial theorem? It lets you find the nth term of insane expressions like this. :)

  2. Cutiepo0
    • 3 years ago
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    I know usually how to solve using the pascal's triangle, but I don't know how to do it for just the first 3 terms

  3. mathteacher1729
    • 3 years ago
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    http://regentsprep.org/Regents/math/algtrig/ATP4/bintheorem.htm might be useful.

  4. mathteacher1729
    • 3 years ago
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    Check out the examples. Then substitute your numbers in and see what happens. NOTE -- you will get BIG NUMBERS.

  5. Cutiepo0
    • 3 years ago
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    Okay, that was useful, but we're not supposed to be using the formula for this question. Do you know if there's any way to solve it just using pascal's triangle?

  6. mathteacher1729
    • 3 years ago
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    You'd have to expand out to the 9th row! Have fun with that! Fortunately you can do it in excel. :) http://jwilson.coe.uga.edu/EMAT6680/Parsons/MVP6690/Essay1/excel.html

  7. Zarkon
    • 3 years ago
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    use the binomial coefficients \[{n\choose r}=\frac{n!}{r!(n-r)!}\]

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