SOLUTION: Solve for X. (Type an integer or simplified fraction).
log x+log (x-15)=2
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Question 277669: Solve for X. (Type an integer or simplified fraction).
log x+log (x-15)=2
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Solve for X. (Type an integer or simplified fraction).
log x+log (x-15)=2
--------------------
log(x(x-15)) = 2
x(x-15) = 10^2
x^2-15x - 100 = 0
(x-20)(x+5) = 0
Positive solution:
x = 20
--------------------
Cheers,
Stan H.
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