diketahui 2 log 3 = p dan 2 log 5 = Q maka 2 log 45 =

2log3 = p
2log5 = q

2log45
= 2log9 + 2log5
= 2log3^2 + q
= 2(p)+q
= 2p+q

2^log 45 = 2^log (3² . 5)
= 2^log3² + 2^log5
= 2 . 2^log3 + 2^log5
= 2 . p + q
= 2p+q