Please help me here!!! Maths
posted by Seth on .
Isolve for x: ln(x^26x16)= 0 . help me beacuse I do not have the idea to work it out.

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.

(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 
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