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Math Help - polynomials

  1. #1
    Junior Member
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    polynomials

    A) For the polynomial y=x^7(x+5)(4x-6)(7-x)
    State the degree=
    and the number of terms=

    *I got
    State the degree=6
    and the number of terms=8
    however it says im wrong

    B)For the polynomial y=4x^5+6x^9+7x^2+9x-9
    the number of terms=
    *I got
    the number of terms=17
    however it says im wrong
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  2. #2
    MHF Contributor
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    I am afraid you are wrong
    Polynomial (x+5)(4x-6)(7-x) degree is 3
    When you multiply par x^7 the degree becomes 10
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  3. #3
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  4. #4
    Senior Member
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    A) equals to: -210 x^7 + 128 x^8 + 14 x^9 - 4 x^{10}
    so the degree is 10 and it has 4 terms.
    B) it has 5 terms.

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