Use the Rational Zeros Theorem to find all the real zeros of the polynomial function. Use the zeros to factor f over the real numbers. f(x) = 4x4 - 7x3 + 23x2 - 35x + 15

A. 1, ; f(x) = (x - 1)(4x - 3)(x2 + 5)
B. -5, -1, 1, - ; f(x) = (x - 1)(4x + 3)(x + 1)(x + 5)
C. -5, -1, 1, ; f(x) = (x - 1)(4x - 3)(x + 1)(x + 5)
D. 5, ; f(x) = (x - 5)(4x - 3)(x2  + 1)


Answer: A

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