Question

Hasil dari ²log 10 + ²log 5 - ²log 25 adalah...
Mohon bantuannya
Sebelumya terimakasih:-D

Answer 1

²log 10 × 5 : 25 = ²log 50 : 25
= ²log 2
= 1
Maaf kalau salah

Answer 2

2 log 10 + 2 log 5 - 2 log 25
= 2 log (10 × 5) - 2 log 25 ingat kaidah a log m + a log n = a log m x n
= 2 log 50 - 2 log 25
= 2 log (50 : 25) ingat kaidah a log m - a log n = a log (m :n)
= 2 log 2 = 1