Question

Tolong ini no 20 caranya gimana

Answer 1

Misalkan a = 3
³log 30 + ³log 3 - (2x³log2) - (2x³log√5) + ³log 18 = 4
³log 30 + ³log 3 - (³log2²) - ³log(√5)² + ³log 18 = ³log 3⁴
³log 30 + ³log 3 - ³log4- ³log5 + ³log 18 = ³log 81
(30x3:4:5x18) = 81
(90:20x18) = 81
4,5 x 18 = 81
³log 81 = 4
³ log 3⁴ = 4

maka a = 3