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1 August, 09:32

Use synthetic division to check - 4 is a root of the polynomial expression: x^4+2x^3-9x^2-2x+8=f (x)

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  1. 1 August, 09:59
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    Hello,

    ... |x^4|x^3|x^2|x^1|x^0

    ... | 1 ... |.2 ... |.-9.|.-2.|.8

    x=-3.| ... |.-4 ... |.8 ... |.4 ... |.-8

    ... | 1 ... |.-2 ... |.-1.| ... 2.|.0

    x^4+2x^3-9x^2-2x+8 = (x+3) (x^3-2x^2-x+2) + 0

    -4 is a root of the polynomial expression.
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