Algebra 2

Find the rational roots of x^4+3x^3+3x^2-3x-4=0.

A.0,1
B.1,2
C.1,-1
D.-1,2

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asked by Maria
  1. let f(x) = x^4+3x^3+3x^2-3x-4

    f(1) = 1 + 3 + 3 - 3 - 4 = 0
    f(-1) = 1 - 3 + 3 + 3 - 4 = 0
    f(0) = -4 ≠ 0
    f(2) = ..... ≠ 0

    so what do you think?

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    posted by Reiny

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