Write the expression in expanded form.logx 9yz
A. logx 9 + logx y + logx z
B. log9 y + log9 z
C. (logx 9)(logx y)(logx z)
D. logx (9 + y + z)
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.logd x10
A. dlog10 x B. -dlog10 x C. -10logd x D. 10logd x
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Perform the indicated operations and express your answer in the form a + bi. 
A. i
B. ±9
C. -9i
D. 9i
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