SOLUTION: How do you solve for x in the following equation? log x + log(x+30)=3

Algebra ->  Customizable Word Problem Solvers  -> Finance -> SOLUTION: How do you solve for x in the following equation? log x + log(x+30)=3      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 594514: How do you solve for x in the following equation?
log x + log(x+30)=3
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
x(x + 30) = 1000

x^2 + 30x - 1000 = 0

(x + 50)(x - 20) = 0


remember, logarithms are not defined for values ≤0