mohon bantuannya 2log4-log2+2log5= keterangan angka 2log4 dan 2 log 5(2 sebagai basis)

²log 4 - log 2 + ²log 5
= ²log (4 x 5) - log 2
= ²log 10 + ²log 2 - log 2
= log 10 - log 2 + 1 - log 2
= 2(1 - log 2)

mohon bantuannya 2log4-log2+2log5=

keterangan angka 2log4 dan 2 log 5(2 sebagai basis)

JAWAB

2log4 - log2 + 2log5
= 2log4 + 2log5 - log2
= 2log(4×5) - log2
= 2log20 - log2
= (log20/log2) - log2
= [(log2 + log10)/log2] - log2
= (log2/log2) + (log10/log2) - log2
= 1 + (1/log2) - log2