SOLUTION: Solve the following equation for x. I've been trying this one and have had difficulty. ln(x)+ln(x+1)=ln(20) thanks

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: Solve the following equation for x. I've been trying this one and have had difficulty. ln(x)+ln(x+1)=ln(20) thanks      Log On


   

Question 330612: Solve the following equation for x. I've been trying this one and have had difficulty.
ln(x)+ln(x+1)=ln(20)
thanks
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
ln%28x%29%2Bln%28x%2B1%29=ln%2820%29
ln%28x%28x%2B1%29%29=ln%2820%29
x%28x%2B1%29=20
x%5E2%2Bx-20=0
Take it from there and solve for the two x values.
You can only use the positive value since the ln function requires positive arguments.