Posted by Seth on Thursday, April 4, 2013 at 1:20am.
Isolve for x: ln(x^26x16)= 0 . help me beacuse I do not have the idea to work it out.

Please help me here!!! Maths  Seth, Thursday, April 4, 2013 at 1:23am
Solve for the value of x: ln(x^26x16)=5. Please help me work it out because I do not have an idea in work it out.

Please help me here!!! Maths  Sunny, Thursday, April 4, 2013 at 1:31am
(x^26x15)=e^5
e^5 is approximately 148.41
so x^26x=148.4115
x^26x = 133.41
x6x = sqrt(133.41)
5x = 11.55
x = 11.55/5
x = 2.31

no  Please help me here!!! Maths  Reiny, Thursday, April 4, 2013 at 7:37am
unfortunately Sunny made several errors,
Try to sub in x = 2.31, it does not work
form his/hers : (x^26x16)=e^5  Sunny had 15
x^2  6x = 148.413 + 16
complete the square by adding 9 to both sides
x^2  6x + 9 = 148.413+16+9 = 173.413
(x3)^2 = 173.413
x3 = ±√173.413 = ± 13.1686
x = 3 ± 13.1686
x = 16.1686 or x = 10.1686
both work when subbed into the original equation
Answer This Question
Related Questions
 art  generally, artists change their styles a. offen beacuse of the influence ...
 Maths  Just need a bit of help understanding what exactly i have to do here to ...
 history  out of growth of schools, racial discrimination, and education for ...
 Please Help work it out! LOGARITHM  log4(3x7)^2=10. I have no idea in working ...
 maths PLEASE HELP  how to work out partial fraction decomposition when given 1/...
 maths  can any one tell me a way of working out a percentage from a total for ...
 Maths  Can someone please help me out here. I can't figure out how to do them. ...
 Maths  I am trying to work out the area and perimeter of an equilateral ...
 7th grade math please help Ms. Sue ASAP  12. Write a sequence of ...
 maths  how to work out partial fraction decomposition when given 1/x(x^2+1) and...
More Related Questions