Example 2 (Laws of Logarithms)

Example 2

Find the value of the following.
(a) log 2 7 + log 2 12 log 2 21

(b) 3 log 10 5 + 2 log 10 2 log 10 5

(c) 2 log 10 3 log 10 3 + log 10 3 1 3

(d) log 3 3 p + log 3 3 q log 3 p q



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