Jawabanmu

2014-06-23T09:37:48+07:00
A+b = log 20 + log 40
       = log(20 x 40)
       = log 800
       = log 8 + log 100
       = 2 + log 8
Semoga membantu
2014-06-23T09:44:07+07:00
A = log20
b = log40

a + b = log 20 + log 40 = log 20 + log (2 x 20)
                                  = log 20 + log 2 + log 20 = 2 log 20 + log 2
gak ada jawabanya,jawabannya itu
a. log8
b. 2log8
c.3log8
d.4log8
e.5log8