Factor.81 - 25x2
A. (9 + 5x)2
B. 81 - 25x2
C. (9 + 5x)(9 - 5x)
D. (9 - 5x)2
Answer: C
Mathematics
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Evaluate the integral.
A. 
(ex - e-x) + C
B. 
(e2x - e-2x) + C
C. 
(e2x + e-2x) + C
D. 
(e2x + e-2x) + C
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Solve by transforming the augmented matrix into row echelon form.
A. (2, 7, 5) B. no solution C. (2, 5, 7) D. (-2, 7, 4)
Mathematics
Use the graph to determine the equation of the circle in center-radius form.
A. (x + 1)2 + (y - 1)2 = 9 B. (x - 1)2 + (y + 1)2 = 3 C. (x - 1)2 + (y + 1)2 = 9 D. (x + 1)2 + (y - 1)2 = 3
Mathematics
Find the following. Assume that letters can represent any real number.
A. Not a real number B. 5 C. -5 D. 25
Mathematics