Find all complex zeros of the polynomial function. Give exact values. List multiple zeros as necessary.f(x) = x4 - 21x2 - 100
A. -2i, 2i, 10i, -10i
B. -2i, 2i, 5i, -5i
C. -2i, 2i, 5, -5
D. -2i, 2i, 10, -10
Answer: C
Mathematics
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A. - 
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D. - 
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2
A. 8 B. Not real number C. -8 or 8 D. -8
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Find the center and radius of the sphere.x2 + y2 + z2 - 4x - 12y - 8z = 25
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Mathematics