SOLUTION: Please help solve for x in the following problem, I couldn't figure it out log(x) + log(x+90)=3

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Question 577511: Please help solve for x in the following problem, I couldn't figure it out
log(x) + log(x+90)=3
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
adding logs is akin to multiplying quantities

"un"logging ___ (x)(x + 90) = 10^3 ___ x^2 + 90x - 1000 = 0

factoring ___ (x + 100)(x - 10) = 0


remember, logs are NOT defined for negative arguments