Find all rational zeros and factor f(x).f(x) = x3 + 6x2 - 40x - 192
A. -5, -8, 12; f(x) = (x + 5)(x + 8)(x - 12)
B. 4, 8, -6; f(x) = (x - 4)(x - 8)(x + 6)
C. 5, 8, -12; f(x) = (x - 5)(x - 8)(x + 12)
D. -4, -8, 6; f(x) = (x + 4)(x + 8)(x - 6)
Answer: D
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