Determine the x values that cause the polynomial function to be (a) zero, (b) positive, and (c) negative.f(x) = (x + 3)(x + 1)(x - 4)2
A. (a) {-3, -1, 4}, (b) (-?, -3) ? (-1, ?), (c) (-3, -1)
B. (a) {-3, -1, 4}, (b) (-?, -3) ? (-1, 4), (c) (-3, -1) ? (4, ?)
C. (a) {-3, -1, 4}, (b) (-?, -3) ? (4, ?), (c) (-3, 4)
D. (a) {-3, -1, 4}, (b) (-3, -1), (c) (-?, -3) ? (-1, ?)
Answer: A
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