Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.x4 + 5x2 - 36
A. (x - 2)2(x2 + 9)
B. (x + 2)(x - 2)(x + 3)(x - 3)
C. (x + 2)(x - 2)(x2 + 9)
D. (x2 - 4)(x2 + 9)
Answer: C
Mathematics
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