Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.f(x) = 8x5 - 7x4 + 8x3 - 6

A.
B.
C.
D.


Answer: C

Mathematics

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Evaluate. The differential is exact.

A. 0 B. e9 + e4 + e5 - 1 C. e18 - 1 D. e18 - 3

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Graph the ellipse and label the center. +  = 1

A. C(0, 4)

B. C(-4, 0)

C. C(4, 0)

D. C(0, -4)

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Find the indicated composite for the pair of functions.f(x) = ; g(x) = 10x + 9Find (g?f)(x)

A. x + 18
B. 10x + 81
C. x - 
D. x

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Find the product.(7x - 5y)2

A. 7x2 + 25y2 B. 49x2 + 25y2 C. 7x2 - 70xy + 25y2 D. 49x2 - 70xy + 25y2

Mathematics