SOLUTION: i cannot seem to be able to find the following answer for x. i nead the exact answer. the question is (lnx^9)*(lnx)-lnx^2-7=0 Please help regards mr hopkins

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: i cannot seem to be able to find the following answer for x. i nead the exact answer. the question is (lnx^9)*(lnx)-lnx^2-7=0 Please help regards mr hopkins       Log On


   

Question 142731: i cannot seem to be able to find the following answer for x. i nead the exact answer. the question is (lnx^9)*(lnx)-lnx^2-7=0
Please help
regards mr hopkins

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
9(ln(x))^2-2(ln(x))-7=0 __ factoring __ [9(ln(x))+7][(ln(x))-1]=0

9(ln(x))+7=0 __ ln(x)=-7/9 __ x=1/[(e^7)^(1/9)]

ln(x)-1=0 __ ln(x)=1 __ x=e


e is Euler's Number, the base for natural logs