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anonymous

  • one year ago

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  1. anonymous
    • one year ago
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    I think I did this totally wrong. I need to go reread the lessons again.

  2. Vocaloid
    • one year ago
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    first use foil to expand y=(x-5)(5x+4)-5x^2

  3. Vocaloid
    • one year ago
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    y=(x-5)(5x+4)-5x^2 y = (5x^2+4x-25x-20) - 5x^2, with me so far?

  4. anonymous
    • one year ago
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    okay I think I gotcha

  5. Vocaloid
    • one year ago
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    then we combine like terms and simplify y = (5x^2+4x-25x-20) - 5x^2 = -21x - 20

  6. Vocaloid
    • one year ago
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    "linear term" is whatever the x term is, so in this case out linear term is -21x

  7. Vocaloid
    • one year ago
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    and our constant term is -20 (the term with no variable attached to it)

  8. anonymous
    • one year ago
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    huh that was easier than I thought. I missed the part about using foil. Okay so that's the linear term. I was correct about the constant term? It's -20

  9. Vocaloid
    • one year ago
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    yes

  10. anonymous
    • one year ago
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    okay I didn't see you're reply yet. I got it right. Thank you for showing me that :) It's much appreciated

  11. anonymous
    • one year ago
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    your*

  12. Vocaloid
    • one year ago
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    no problem. it would also be good to learn the foil method which will be helpful in the future http://www.freemathhelp.com/using-foil.html

  13. anonymous
    • one year ago
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    thanks

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