Posted by **Ana** on Monday, March 1, 2010 at 6:38pm.

how do i solve these two problems?

3log(base5)^(x^2+9)-6 = 0

log(base8)^(n-3) + log(base8)^n+4)= 1

can you tell me step by step as well as the answers? please and thank you

- Algebra 2 -
**drwls**, Monday, March 1, 2010 at 7:12pm
Here is how to do the first one. The second is similar. First simplify the algebra. Then write the log equation in a different form.

3 log(base5)^(x^2+9) = 6

log(base5)^(x^2+9) = 2

Which is another way of saying:

5^2 = 25 = x^2 + 9

x^2 = 16

x = + or - 4

- Algebra 2 -
**Ana**, Monday, March 1, 2010 at 7:15pm
how'd you get the log(base5)^(x^2+9) = 2 ?

- Algebra 2 -
**drwls**, Monday, March 1, 2010 at 7:30pm
I divided both sides of the first equation by 3. It's a perfectly "legal" operation when dealing with algebraic equations.

## Answer this Question

## Related Questions

- Algebra 2 - i don't know how to do this problem. i keep getting stuck. can ...
- mathematics - Need help with these: Write the expression as a logarithm of a ...
- adv functions - Hi! I need help with determining the value of each of the ...
- Pre-Calc Help please - Solve for x: log base5 (4x) + log base5 (x) = log base5 (...
- Maths - I got this question, and found what I believe to be the solution, but ...
- Calculus - Find A so that 5log(base5)16807 − 3log(base5)7 = log (base5)A I...
- Algebra - will you please show me step by step in solving: 1/2 log b + 3 log c. ...
- Math: Algebra2 Logarithms - Can someone help me find the value of B in this ...
- college algebra - Write expression as one logarithm and simplify if appropriate...
- math - Logarithm!!! Select all of the following that are true statements: (a) ...

More Related Questions