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anonymous

  • 5 years ago

Can someone show me how to work this out? 32x^3-28x^2-87x-27 divide by 8x+3

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  1. anonymous
    • 5 years ago
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    Are you studying long division?

  2. anonymous
    • 5 years ago
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    Do you know synthetic division?

  3. anonymous
    • 5 years ago
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    yes, long division, factoring polynomials

  4. anonymous
    • 5 years ago
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    Just a minute

  5. anonymous
    • 5 years ago
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    How many times does 8x go into 32x^3 or you can ask yourself what is 32x^3 divided by 8x?

  6. anonymous
    • 5 years ago
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    would it be 4x^3, but how do if figure out the rest -28x^2-87x-27?

  7. anonymous
    • 5 years ago
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    It would be 4x^2 because you already have 1 of the x's with the 8x 8x(4x^2) = 32x^3 This is a long process... so... put 4x^2 above the 32x^3 and multiply 4x^2 (8x+3) and put that under the polynomial

  8. anonymous
    • 5 years ago
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    4x^2 ------------------------ 8x + 3 | 32x^3 - 28x^2 - 87x - 27 32x^3 + 12x^2

  9. anonymous
    • 5 years ago
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    Now draw a line under the bottom part, change the signs 32x^3 + 12x^2 becomes -32x^3 - 12x^2 and then add. you should end up with -40x^2

  10. anonymous
    • 5 years ago
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    oh ok, it is easier to "see" this way..thank you

  11. anonymous
    • 5 years ago
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    4x^2 ------------------------ 8x + 3 | 32x^3 - 28x^2 - 87x - 27 -32x^3 - 12x^2 -------------- -40x^2 = 87x then you ask yourself 8x times what is -40x^2 and put that above the -28x^2 and repeat the process

  12. radar
    • 5 years ago
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    India, have you figured out what to multiply 8x to get -40x^2? Don't give up.

  13. anonymous
    • 5 years ago
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    Sorry that is a - 87 not an = 87x

  14. radar
    • 5 years ago
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    That polynomial will factor to 3 binomials.

  15. radar
    • 5 years ago
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    Earth to India, have you quit?

  16. radar
    • 5 years ago
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    (4x-9)(x+1)(8x+3)

  17. radar
    • 5 years ago
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    You need to practice the long division method.

  18. anonymous
    • 5 years ago
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    Thank you, I understood blexting explained it. Thanks again

  19. radar
    • 5 years ago
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    Oh O.K. I thought you might of got stuck on the 8x times ? =40x^2. Good to hear you crossed that hurdle. Good luck

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