Question: Find only the rational zeros of the function. a. f(x) = x4 + 2x3 - 5x2 - 4x + 6 b. f(x) = x4 -

Find only the rational zeros of the function.
a. f(x) = x4 + 2x3 - 5x2 - 4x + 6
b. f(x) = x4 - 3x3 - 9x2 - 3x - 10
c. f(x) = x3 - x2 - 4x + 3

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