Use the theorem on bounds to establish the best integral bounds for the roots of the equation.-7x4 - 2x3 + 6x + 9 = 0

A. No bound can be determined.
B. -2 < x < 2
C. -1 < x < 2
D. -1 < x < 1


Answer: C

Mathematics

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A. = 
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A. 21
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C.
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