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# Logs!!!!

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1. Hey guys
In C2 for logarithms how do you manipulate a question with three minus logs??
Coz I know that when there's a minus you divide the logs but how do you do that if there are three minuses??

Ex: log(2)11x+3 - log(2)5x - 2log(2)x = 1
2. divide again
3. Wow. Exam in 9 hours
4. think of it like this:

log(2)11x+3 - [log(2)5x + 2log(2)x] = 1
5. You can consider it as (using my own values)
log(a)-log(b)-log(c)=d
log(a)-(log(b)+log(c))=d
log(a)-log(bc)=d
log(a/bc)=d
6. basically u can just combine two of them together into one, and then combine that one with the 3rd one. U could try it in different combinations and see how it works to help u get ur head round it
7. (Original post by CuriosityKTMC)
You can consider it as (using my own values)
log(a)-log(b)-log(c)=d
log(a)-(log(b)+log(c))=d
log(a)-log(bc)=d
log(a/bc)=d
Thank you so much!!! 👌🏻💯
But how comes you multiply b and c despite there being a minus between then??
8. You can also take one to the other side and have log (a/b) =log (cd)
You can also take one to the other side and have log (a/b) =log (cd)
Then would you cancel out the logs coz they're the same??
10. (Original post by CrystalPark)
Thank you so much!!! 👌🏻💯
But how comes you multiply b and c despite there being a minus between then??
I put them in a bracket so in the bracket they are add and then you subtract the whole thing.

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