Factor.81x2 - 16
A. (9x + 4)(9x - 4)
B. (9x + 4)2
C. (9x - 4)2
D. prime
Answer: A
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Find 
by using logarithmic differentiation.y = 
A. 
B. 
C. 
D. 
Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions exist.16x2 - 8x + 1 = 0
A. Two different imaginary-number solutions B. Two different real-number solutions C. One real solution
For the given direct statement, write the indicated related statement (converse, inverse, or contrapositive).He who laughs last, laughs loudest. (inverse)
A. If he laughs last, he doesn't laugh loudest. B. If he doesn't laugh last, he doesn't laugh loudest. C. If he laughs loudest, he laughs last. D. If he doesn't laugh loudest, he doesn't laugh last.
Find the standard form of the equation of the ellipse with the given characteristics.
?
foci: 
, endpoints of the major axis: 
?
A. 
B. 
C. 
D. 
E. 