Tentukan nilai dari 3 log 72 - 7 log 2 - 3 log 8 + 7 log 98 tlg pakai cara

3 log 72 - 3 log 8 + 7 log 98 - 7 log 2
= 3 log 72/8 + 7 log 98/2
= 3 log 9 + 7 log 49
= 3 log 3² + 7 log 7²
= 2. 3 log 3 + 2. 7 log 7
= 2.1 + 2.1
= 2+2 = 4