Question

Tolong ya :) makasih banyak xo

Answer 1

Jawaban sudah tertera dalam foto yaa

Answer 2

Logaritma

a'log b = c'log b / c'log a

••
⁴log 5 = m
⁷log 5 = n
perhatikan komponen yg sm, sbg nilai dr c

•
³⁵log 20

= ⁵log 20 / ⁵log 35

= ⁵log (4 × 5) / ⁵log (7 × 5)

= (⁵log 4 + ⁵log 5) / (⁵log 7 + ⁵log 5)

= (1/m + 1) / (1/n + 1)

= ((1 + m)/m) / ((1 + n)/n)

= n/m (1 + m)/(1 + n)

= (n + nm) / (m + nm) ✔