2log 3=P dan 2log 7 =q maka 27lg 42???

jawab

²log 3 = p
²log 7 = q

²⁷log 42 =  ²log 42 / ²log 27
= ²log (2 .3.7) / ²log 3³
= ( ²log 2 + ²log 3 + ²log 7) / (3. ²log 3)
= (1 + p + q) /(3.p)