Question

Need help:2^(x+5) = 9
How do you get 2 and 9 to have the same bases? or how else could you do this problem?

Answer 1

take natural log on both sides:
ln(2^(x+5))=ln9

Answer 2

use the property:
lna^b=b*lna, so you get:
ln(2^(x+5))=(x+5)ln2=ln9

Answer 3

(x+5)=ln9/ln2
(x+5)=ln9/ln2

Answer 4

x=(ln9/ln2)-5

Answer 5

thank you :D

Answer 6

do you know a good website that goes over natural logs and e well?

Answer 7

because I'm trying to do this next problem, and I don't know how to do it :(. This is the question: lnx+ln(x−6)=2