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Kilochan
log[3](x-2)=log[3] 27 - log[3](x-4) -5^(log[5]1) I have tried this out and right now all I am getting is log[3] (x-2)(x-4)/27= -5^(log[5] 1) Is this somewhat right so far? I'm not sure what to do with the "log[3] 27" the answer is supposed to be- 3+sqrt(10)
hint : -5^(log[5] 1 = -1 now, setting -1 be log[3] (1/3)
HINT(also): \(\large log_327=a \Leftrightarrow 3^a=27 \) what's a= ???
yes, that's right.. then, ?
well, i want make easier for u from ur solution above : log[3] (x-2)(x-4)/27= -5^(log[5] 1 setting right side be -1 it can be : log[3] (x-2)(x-4)/27= -1 then -1 = [3] (1/3), therefore it can be log[3] (x-2)(x-4)/27= [3] (1/3) cancel out the log[3] to both sides (x-2)(x-4)/27= 1/3 or (x-2)(x-4) = 27 * 1/3 (x-2)(x-4) = 9 now, solve for x
* log[3] (x-2)(x-4)/27= log [3] (1/3)
Ok! I was close. I for for to put log[3] on both sides. But now that I see where I went wrong, I will finish solving for x and let you know if I have any problems. Thank you so much for your help!
okay... to get solution of (x-2)(x-4) = 9 simplify, frist. then use quadratic formuka : x = {-b +- sqrt(b^2-4ac)}/2a if u got 2 solution's, that one positive and the other negative, just take that positive value, because for x negative undefined for log[3] (x-2)
I finished the problem! I got the correct answer! Thanks for your help! One last question. for -5^(log[5] 1, did you plug that in a calculator? I tried that and I'm getting the number 3.
no, i have used the property of logarithm : |dw:1361529157735:dw|