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10 October, 19:42

What polynomial has roots of - 6 - 4 and 1?

a. x^3-9x^2-22x+24

b. x^3-x^2-26x-24

c. x^3+x^2-26x+24

d. x^3+9x^2+14x-24

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  1. 10 October, 21:16
    0
    Hello,

    Answer D

    (x+6) (x+4) (x-1)

    = (x²+6x+4x+24) (x-1)

    = (x²+10x+24) (x-1)

    =x^3+10x²+24x-x²-10x-24

    =x^3+9x²+14x-24
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