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Fakshon
Group Title
Please tell me if this is right...
Solve the logarithmic equation:
log_4(x18) + log_4 (x3) = 2
log_4((x18)(x3)=4^2
x^221x+54=16
x^221x+38=0
(x2)(x19)=0
x=2, x=19 < Answer
 one year ago
 one year ago
Fakshon Group Title
Please tell me if this is right... Solve the logarithmic equation: log_4(x18) + log_4 (x3) = 2 log_4((x18)(x3)=4^2 x^221x+54=16 x^221x+38=0 (x2)(x19)=0 x=2, x=19 < Answer
 one year ago
 one year ago

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hartnn Group TitleBest ResponseYou've already chosen the best response.1
your final answer is correct but the 2nd step will be log_4((x18)(x3)=2 then 3rd step x^221x+54=16 is correct
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
or your 2nd step could be log_4((x18)(x3)=log_4 (4^2)
 one year ago

Fakshon Group TitleBest ResponseYou've already chosen the best response.0
yea I did that but I skipped the step on here. I wrote that on my paper.
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
then you are correct
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
oh, wait i just realized, x=2 cannot be the answer
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
because that would make x3 as negative then log (x3) will not be defined @Fakshon
 one year ago
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