SOLUTION: 2log(x-5)=log9
Algebra
->
Logarithm Solvers, Trainers and Word Problems
-> SOLUTION: 2log(x-5)=log9
Log On
Algebra: Logarithm
Section
Solvers
Solvers
Lessons
Lessons
Answers archive
Answers
Click here to see ALL problems on logarithm
Question 41643
:
2log(x-5)=log9
Answer by
tran3209(100)
(
Show Source
):
You can
put this solution on YOUR website!
2log(x-5)=log9
log(x-5)^2=log9
(x-5)^2=9
x^2-10x+25=9
x^2-10x+25-9=9-9
x^2-10x+16=0
(x-8)(x-2)=0
x-8=0--->x=8
x-2=0--->x=2
the answers are x=8 and x=2