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giulsvalentini

  • one year ago

expand (2x-1)^5

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  1. giulsvalentini
    • one year ago
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    calculate (2x-1)^5

  2. Xavier1
    • one year ago
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    ( 2x - 3y )4 = (2x)4 + 4(2x)3(-3y) + 6(2x)2(-3y)2 + 4(2x)(-3y)3 + (-3y)4

  3. MrSensitive
    • one year ago
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    32x^5 - 80x^4 + 80x^3 - 40x^2 +10x - 1

  4. wmckinely
    • one year ago
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    10x - 5 because: you multiply the numbers inside the parenthesis by the exponent of 5 so, 2x multiplied by 5 is 10x and -1 by 5 to get -5...

  5. timo86m
    • one year ago
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    binomial theory, or binomial expansion i forget what it is called.

  6. Peter14
    • one year ago
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    this is just a busy work problem. MrSensitive has the right answer. @giulsvalentini do you know how to do it or do you need us to explain it to you?

  7. giulsvalentini
    • one year ago
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    I have to use the Triangolo di Trataglia, di you know it? sorry for my English, I'm Italian :) @Peter14

  8. Peter14
    • one year ago
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    Pascal's triangle? yes, I know it

  9. giulsvalentini
    • one year ago
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    so I have to apply th formule of the development of i don't know do you say power (a^n)?

  10. timo86m
    • one year ago
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    http://www.mathsisfun.com/algebra/binomial-theorem.html it's the binomial theorem.

  11. giulsvalentini
    • one year ago
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    exactly! @timo86m

  12. timo86m
    • one year ago
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    link explains it very well.

  13. Peter14
    • one year ago
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    if you don't know how to say something in english say it in italian. I know spanish so I could understand, and if I don't there's always google translate

  14. giulsvalentini
    • one year ago
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    I think today I won't do my math's homeworks.

  15. giulsvalentini
    • one year ago
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    Thank you @timo86m

  16. Peter14
    • one year ago
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    you're skipping a day of math homework? it will only be harder tomorrow...

  17. Peter14
    • one year ago
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    @giulsvalentini I will help...

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