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anonymous
 4 years ago
Solve 2log(x+1)log(5x+1)+log(x1)=log2.
anonymous
 4 years ago
Solve 2log(x+1)log(5x+1)+log(x1)=log2.

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0star with \[\log(\frac{(x+1)^2(x1)}{5x+1})=\log(2)\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0okay yeah i did that, i'm not sure how to move from there :S the answer is supposed to be 3.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0oh carp you are going to end up with a cubic polynomial. oh well...

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[(x+1)^2(x1)=2(5x+1)\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[x^3+x^211 x3 = 0\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0how you are supposed to solve this is anyone's guess, but if there is a rational solution it has to be either 3 or 3 so i imagine you are supposed to try 3 and see that it works

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0then you have to factor as \[(x3)(x^2+4x+1)\] and see that the other two zeros are negative

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0oh so i would use quadratic formula to solve the second set?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0yes, but both answers are negative so you can disregard them because you would end up taking a log of a negative number, which is not defined

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0what do you mean by "you would end up taking a log of a negative number, which is not defined", didn't we drop the logs though?
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