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toadytica305
 3 years ago
How do you solve when you have logs on one side but not the other? (2 problems inside)
toadytica305
 3 years ago
How do you solve when you have logs on one side but not the other? (2 problems inside)

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mathg8
 3 years ago
Best ResponseYou've already chosen the best response.0use the product rule log A + log B = log (AB)

toadytica305
 3 years ago
Best ResponseYou've already chosen the best response.0I tried that... for Log x + log (x+15) = 2 I have (Log x)(log (x+15)) =2 i dont know what to do after The answer is 5

saifoo.khan
 3 years ago
Best ResponseYou've already chosen the best response.0\[\lg x(x+15) = 2\]

AravindG
 3 years ago
Best ResponseYou've already chosen the best response.0log x+log (x+15)=log(x(x+15))!!

RadEn
 3 years ago
Best ResponseYou've already chosen the best response.2it just a hint, so that both sides have log's :)

toadytica305
 3 years ago
Best ResponseYou've already chosen the best response.0But how do you go from log(x(x+15)=2.. to x=5? I can't get that part

RadEn
 3 years ago
Best ResponseYou've already chosen the best response.2log(x(x+15))=2 log(x(x+15)=log100 cancel out the log, giving us : x(x+15)=100 or x^2+15x100=0 solve for x by factorization or by complete square or by quadratic formula

toadytica305
 3 years ago
Best ResponseYou've already chosen the best response.0Yes! Just solved it.. thank you!

toadytica305
 3 years ago
Best ResponseYou've already chosen the best response.0I didn't think of doing log 100 to cancel the logs on both sides
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