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Simplify 2log frac 2 5 - log frac 72 125 log 9 - JAMB Mathematics 1991 Question

Simplify 2log (\frac{2}{5}) - log(\frac{72}{125}) + log 9

A
1 - 4 log3
B
-1 + 2 log 3
C
-1 + 5 log2
D
1 - 2log 2
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Correct Option: D

2log (\frac{2}{5}) - log(\frac{72}{125}) + log 9

[(\frac{2}{5}))2 x 9] = log (\frac{4}{25}) x (\frac{9}{1}) x (\frac{125}{72})

= log (\frac{72}{125})

= log (\frac{5}{2})

= log (\frac{10}{4})

= log 10 - log 4

= log10 10 - log10 22

= 1 - 2 log2

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