Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.log x + log (x -1) = log 30
A. {6, -5}
B. {-5}
C. 
D. {6}
Answer: D
Mathematics
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Solve the system of equations using elimination. 
A. (-2, 6) B. infinitely many solutions C. (6, -2) D. no solution
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Simplify the exponential expression.
2
A. 
B. 
C. 
D. 
Mathematics
Find the square root.- 
A. -9 B. 4.5 C. -4.5 D. 9
Mathematics
Find the coefficient a of the term in the expansion of the binomial.
?
?
A. -407,653,785 B. -652,246,056 C. 760,953,732 D. 181,179,460 E. 652,246,056
Mathematics