Jawabanmu

2014-09-02T10:07:02+07:00
7. ^aloga^4- 1/(^aloga^4)= 4-1/4=3  3/4

8. ^alog (bc)^2=2. ^alog bc=2.(^alog b+^alogc)=2.(4+^alogb.^blogc=-2.(4+4.4)=40