2log 3 =x 2log 5=y jadi 2log 150=….

2log3 = x
2log5 = y
2log150 = 2log (3 x 50)
= 2log 3 + 2log50
= x + 2log (2 x 25)
= x + 2log2 + 2log25
= x + 1 + 2log (5 x 5)
= x + 1 + 2log5 + 2log5
= x + 1 + y + y
= 1 + x + 2y