Question

http://s29.postimg.org/3v0o0dk7r/image.jpg How to do c)? I try to do, but i dont get the right answer. I dont know where to put that minus o.o the answer is 2 2/3 (8/3)

Answer 1

Try to separate it like this: \[x ^{a-b}=\frac{ x ^{a} }{ xb }\]

Answer 2

But i dont understand how.. Sorry im new at log and stuff like that>.<

Answer 3

Also don't forget that: \[-\log _{a}(x) =\log _{a}(x ^{-1})\] and \[a ^{\log _{a}(x)}=x\]

Answer 4

Can you show me how far you got ?

Answer 5

@Cherryboa

Answer 6

When i try to do i get 1/3 not 8/3 .-.

Answer 7

Yay i did it ^^

Answer 8

http://s2.postimg.org/nay8sahp5/image.jpg <-- i did like that, so thanks for your help, bcuz i didnt know about first rule u showed me

Answer 9

No probs =)