Factor completely.x3y - 5x2y2 - 24xy3
A. y(x - 8y)(xy + 3y2)
B. xy(x - 8y)(x + 3y)
C. x(xy - 8y2)(x + 3y)
D. xy(x2 - 5x - 24y2)
Answer: B
Mathematics
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+ 
+ 
= 1 and the planes 
and 
(The area of an ellipse with semiaxes a and b is ?ab.)
A. 6666.67? units3 B. 66.67? units3 C. 133.33? units3 D. 266.67? units3
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Divide numerator and denominator by the highest power of x in the denominator to find the limit.
A. 
B. 0
C. ?
D. 
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Factor the sum or difference of cubes. 216k3 + m3
A. (6k + m)(36k2 + m2) B. (6k + m)(36k2 - 6km - m2) C. (6k + m)(36k2 + 6km + m2) D. (6k + m)(36k2 - 6km + m2)
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Use an identity to find the value of the expression. Do not use a calculator.sec2 55° - tan2 55°
A. 1 B. 0.30 C. 0.55 D. 0
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