1.

\begin{array}{l}{\text { Simplify: }} \\ {\text { a) } \log \left(\frac{25}{77}\right)+\log \left(\frac{121}{35}\right)+\log \left(\frac{49}{55}\right)}\end{array}

Answer»

log(a) + log (b) = log(ab)

log (25/77) + log (121/35) + log(49/55)

log( 25×121×49)/(77×35×55)

log ( 1) = 0



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