SOLUTION: ln x + ln (x - 3) = ln 70 Solve for x

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Question 1005476: ln x + ln (x - 3) = ln 70
Solve for x
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
From
ln x + ln (x - 3) = ln 70
we combine and then exponentiate to get
ln x(x-3) = ln 70
x(x-3) = 70
x^2 - 3x - 70 = 0
(x - 10)(x + 7) = 0
x = 10 (can't be -7)