Jawabanmu

2014-09-12T21:03:54+07:00
4 log75=
=3log75 / 3log4
=3log5^.3log3 / 3log2^
=2.log5. 3log3 / 2. 3log2
=1 x 2+b / 1/a x 2 (dikali a atas dan bawah)
=a(1+2b)/2