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30 August, 04:04

Which is a third degree polynomial with - 3 and 2 as its only zeros?

a. f (x) = x^3+x^2-8x-12

b. f (x) = x^3+2x^2-5x-6

c. f (x) = x^3+4x^2-3x-18

d. f (x) = x^2+x-6

+3
Answers (1)
  1. 30 August, 04:18
    0
    Answer:b

    Step-by-step explanation:

    f (x) = x^3+2x^2-5x-6

    Put x = - 3 in the equation

    f (-3) = -3^3+2*3^2-5*3-6

    = - 27+18+15-6 = 0

    f (2) = 2^3+2*2^2-5*2-6

    =8+8-10-6 = 0
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