Use Descartes' Rule of Signs and 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) = x4 - 5x2 - 36
A. -3, -2, 3, 2; f(x) = (x - 3)(x + 3)(x - 2)(x + 2)
B. -3, 3; f(x) = (x - 3)(x + 3)(x2 + 4)
C. -2, 2; f(x) = (x - 2)(x + 2)(x2 + 9)
D. 3; f(x) = (x - 3)2(x2 + 4)
Answer: B
Mathematics
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