Posted by **sarah** on Monday, October 18, 2010 at 10:57pm.

log3 2 +log3 X +log3 (2x-3)=log3 X + log3 (x+1) + log3 (x-1) - log3 (x^2-1)

- precalc -
**Reiny**, Monday, October 18, 2010 at 11:33pm
log_{3} [ 2x(2x-3) ] = log_{3}[ x(x+1)(x-1)/(x^2 - 1) ]

"anti-log" it , remember the old "whatever you do to one side, you must do to the other side"

2x(2x-3) = x(x+1)(x-1)/(x^2 - 1)

4x^2 - 6x = x

4x^2 - 7x = 0

x(4x - 7) = 0

x = 0 or x = 7/4

but log x would be undefined if x=0

so x=7/4

better check my arithmetic

## Answer This Question

## Related Questions

- Precalculus - Please help me with these questions ASAP!! Suppose that f(x)=log3...
- ALGEBRA 1 - Lesson 3 Assignment .Explain the differences between solving these ...
- Algebra 1 - Lesson 3 Assignment .Explain the differences between solving these ...
- Pre-calculus - Hi i need to find x in 9^(2x-6)=6^(8x-5) So what i did was: 3^(4x...
- Math - Solve the logarithmic equation. Express your solutions in exact form only...
- Math - Given that x=log3^5 and y=log3^2, rewrite log3^60 in terms of x and y.
- Math - (I have two questions) 1. Solve for x without a calculator: log3(x^2)=...
- Math - Express the following as a logarithm and simplify. 1. log(3x^2 + 11x - 20...
- Math - Express the following as a logarithm and simplify. 1. log(3x^2 + 11x - 20...
- Math - logs - log_3(2x - 1) = 2, Find x. Here's what I've done: log_3(2x) * ...

More Related Questions