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anonymous

  • 5 years ago

jus completed my homework. so if anyone wants to check it. I would appreciate it. (y^2-8)(5y^2-8y+7)= 5y^4-8y^3-33y^2+64y-56?

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  1. anonymous
    • 5 years ago
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    5y^4 - 8y^3 + 7y^2 - 40y^2 - 64y - 56 You forgot the term y^2 * +7

  2. anonymous
    • 5 years ago
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    Then you add like terms. 5y^4 - 8y^3 - 33y^2 - 64y - 56 OOPS You are correct.

  3. radar
    • 5 years ago
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    There is a conflict in the sign of the 64y, I haven't verified what sign it is

  4. anonymous
    • 5 years ago
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    64y should be positive... my bad

  5. radar
    • 5 years ago
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    agree

  6. anonymous
    • 5 years ago
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    let me try it again, i'm pretty sure it's -

  7. radar
    • 5 years ago
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    No need India, you've got it right, but review never hurts

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spraguer (Moderator)
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