Posted by **Deb** on Wednesday, April 17, 2013 at 4:36pm.

I need to expand the expression without exponents. We haven't covered this yet so I am confused on how to do both of them

Log x4y7/4

4

log x^8/√yz^5

4

Thanks, for your help.

- college algebra -
**Steve**, Wednesday, April 17, 2013 at 5:15pm
log(a^b) = b log(a)

log(ab) = log(a) + log(b)

since 1/b = b^-1,

log(a/b) = log(a) - log(b)

since √a = a^(1/2),

log √a = 1/2 log a

log x^4y^7/4 = 4logx + 7logy - log4

so you should be able to do the other

if these problems involve logs base 4, that doesn't matter. The rules of logs are independent of the base.

## Answer This Question

## Related Questions

- algebra - Write expression as one logarithm and simplify if appropriate. log 3&#...
- college algebra - Write expression as one logarithm and simplify if appropriate...
- math - Logarithm!!! Select all of the following that are true statements: (a) ...
- math - solve for x without using a calculator 5^(x+1) = 25 i know that x would ...
- precalc(LOGS) CONFUSED! - How do I rewrite without logarithms?? 2. log x= log a...
- Algebra 2 once more - I have more answers that I would like checked. Also, there...
- math(Please help) - 1) use the properties of logarithms to simplify the ...
- Trigonometry - This is a logs question If u=x/y^2, which expression is ...
- Algebra 2 - how do not understand how to do this Log X + Lob (X-3) = 1 I know I ...
- Math Help Please - Which of the following expressions is equal to log (x sqrt-y...

More Related Questions