a) ²log 40+2 ²log 5-²log 8 b) log 90 - 2 log 3 + log 2

Question

Matematika Diposting : 2017-10-11 Diupdate : 2022-08-25 aprillllkrsnaaaaa

Pertanyaan

a) ²log 40+2 ²log 5-²log 8
b) log 90 - 2 log 3 + log 2

Answer 1

a) ²log 40+2 ²log 5-²log 8
= ²log (40 x 5²/8) = ² log 5³
= 3 ²log5

b) log 90 - 2 log 3 + log 2
= log (90/3² x 2)
= log 20