SOLUTION: Solve this equation exactly for x (ok to leave in ln or log form). log(x)+log(2x)=2

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Question 423933: Solve this equation exactly for x (ok to leave in ln or log form).
log(x)+log(2x)=2

Found 2 solutions by linht117, MathLover1:
Answer by linht117(37) About Me  (Show Source):
You can put this solution on YOUR website!
log(x)+log(2x)=2
log(x)(2x)=2
log(2x^2)=2
let both sides be the exponent of base 10
10^log(2x^2)=10^2
exponent is release
2x^2=10^2
divide by 2
2x^2/2=100/2
x^2=100/2
square root both sides
x=+- sqrt50

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
first some basic rules to remember:
Log Rules:
1) logb%28mn%29+=+logb%28m%29+%2B+logb%28n%29
2) logb%28m%2Fn%29+=+logb%28m%29+-+logb%28n%29
3) logb%28mn%29+=+n%2Alogb%28m%29

you have:
log%28x%29%2Blog%282x%29=2.....so, use the rule number 1

log%28x%282x%29%29=2.......I assume the base is 10...By the definition of the logarithm implies

%28x%282x%29%29=10%5E2

2x%5E2=100

x%5E2=100%2F2

x%5E2=50

x=sqrt%2850%29

x=sqrt%282%2A25%29

x=5sqrt%282%29