## anonymous 5 years ago Precal. Help. Please. log(x) + log(x+2) = 3

1. anonymous

logx +logy = logxy use this property log(x(x+2)) = 3 put it in exponential form x(x+2) = 10^3 set equal to 0 x^2 +2x - 1000 =0 use quadratic formula $\frac{-2\pm \sqrt{4004}}{2}$

2. anonymous

I did all of that up to the quadratic formula! Thank you!

3. anonymous

you can reduce that too -1 +- sqrt(1001)

4. anonymous

the root -1-sqrt(1001) is not acceptable...only +ve values should be taken in the domain of log