Write the expression as a logarithm of a single expression. Assume that variables represent positive numbers.3 loga (2x + 1) - 2 loga (2x - 1) + 2

A. loga 2(x + 1)
B. loga 
C. loga (2x + 3)
D. loga (2x + 1) + 2


Answer: B

Mathematics

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A.
B.
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D.  

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A.

B.

C.

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A. 0
B. - 
C.
D. Does not exist

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Factor completely.9k2 - 49m2

A. (3k + 7m)2 B. (3k - 7m)2 C. (3k + 7m)(3k - 7m)  D. (9k + m)(k - 49m) 

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