Asked by jill
how do you solve
log (x+9) = 1 - log x
log (x+9) = 1 - log x
Answers
Answered by
oobleck
log (x+9) = log10 - logx
x+9 = 10/x
x^2 + 9x - 10 = 0
(x+10)(x-1) = 0
x = -1 or 1
But logx is undefined for x < 0, so x=1 is the only solution.
check: log(1+9) = log10 = 1 - log1 = 1-0 = 1
x+9 = 10/x
x^2 + 9x - 10 = 0
(x+10)(x-1) = 0
x = -1 or 1
But logx is undefined for x < 0, so x=1 is the only solution.
check: log(1+9) = log10 = 1 - log1 = 1-0 = 1
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.