Multiply.(3x - y)(3x + y)(9x2 - y2)
A. 81x4 - y4
B. 81x4 + 18x2y2 - y4
C. 81x4 - 18x2y2 + y4
D. 81x4 + y4
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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Use the Factor Theorem to determine whether x - c is a factor of f(x).f(x) = x4 + 11x3 + 7x2 + 73x - 44; x + 11
A. Yes B. No
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The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 
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A. r = 
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