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toxicsugar22

  • 5 years ago

Find the indicated term in the product. (3x+x^3-7x^5)(1+4x-3x^2) for x^3

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  1. toxicsugar22
    • 5 years ago
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    can u help me

  2. toxicsugar22
    • 5 years ago
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    can someone help

  3. toxicsugar22
    • 5 years ago
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    blexting can u help me

  4. anonymous
    • 5 years ago
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    Sure

  5. anonymous
    • 5 years ago
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    There is a long way and a short way. the long way is to multiply this out.. you would distribute 3 times.

  6. anonymous
    • 5 years ago
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    Or. you could look at how can I get x^3 by multiplying terms. If you are not that good at math we should do it the long way.

  7. anonymous
    • 5 years ago
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    (3x + x^3 - 7x^5) (1) = 3x + x^3 - 7x^5 (3x + x^3 - 7x^5)(4x) = 12 x^2 + 4x^4 - 28x^6 (3x + x^3 - 7x^5)(-3x^2) = -9x^3 - 3x^5 + 21x^7 Now we only look at the x^3 terms. I see a x^3 and -9x^3 so if you add those we get -8x^3

  8. toxicsugar22
    • 5 years ago
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    ok

  9. toxicsugar22
    • 5 years ago
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    that is the answer

  10. anonymous
    • 5 years ago
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    Yes

  11. toxicsugar22
    • 5 years ago
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    thanks and can u help me with one more

  12. anonymous
    • 5 years ago
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    Sure

  13. toxicsugar22
    • 5 years ago
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    ok

  14. toxicsugar22
    • 5 years ago
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    it bassicly the same thing

  15. toxicsugar22
    • 5 years ago
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    is that okay

  16. anonymous
    • 5 years ago
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    Yes

  17. toxicsugar22
    • 5 years ago
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    Find the indicated term in each product (4+2x-x^2)(2-3x+2x^2) for x^2

  18. anonymous
    • 5 years ago
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    (4 + 2x - x^2)(2) = 8 + 4x - 2x^2 (4 + 2x - x^2)(-3x) = -12x - 6x^2 + 3x^3 (4 + 2x - x^2)(2x^2) = 8x^2 + 4x^3 - 2x^4 do you understand how I get these?

  19. toxicsugar22
    • 5 years ago
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    yes

  20. anonymous
    • 5 years ago
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    OK.. now look at all the terms on the right. typically we would add all of these up to get the answer, but they only want the x^2 term

  21. anonymous
    • 5 years ago
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    So I see... -2x^2 and -6x^2 and 8x^2

  22. anonymous
    • 5 years ago
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    So add those up. -2x^2 - 6x^2 + 8x^2 = 0x^2 so actually you have no x^2 terms in the answer. So I guess I would say 0x^2

  23. toxicsugar22
    • 5 years ago
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    wow thanks i got it

  24. toxicsugar22
    • 5 years ago
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    i gave u a medal

  25. anonymous
    • 5 years ago
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    Thanks... good luck

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