Perform the indicated operation.(3a - b)3
A. 27a3 - b3
B. 27a3 - 27a2b - 9ab2 - b3
C. 27a3 - 9a2b + 3ab2 - b3
D. 27a3 -27a2b + 9ab2 - b3
Answer: D
Mathematics
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A. 2.429 B. -0.713 C. 2.283 D. 3.854
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Factor out the greatest common factor.m6n4 - m5n6
A. Prime polynomial B. m6n4(1 - mn2) C. m6n6(m - n2) D. m5n4(m - n2)
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Find the center of mass of the thin rod with the given density function.Find the center of mass of a thin rod that lies along the semicircle y = 
if the density of the rod is 
.
A. 
= 
, 
= 
B. 
= 0, 
= 
C. 
= 0, 
= 1
D. 
= 1, 
= 1
Mathematics
Decide whether the equation is or is not an identity.tan (? + ?) = tan ?
A. Not an identity B. Identity
Mathematics