Ask
your own question, for FREE!
Mathematics
80 Online
OpenStudy (anonymous):
please help me find all exaclty solutions for these 2 equation: 9^x + 14 = 3^(x+2) (logx)^3 = 3 logx
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
the first equation, do logs log both sides, see where that gets you
OpenStudy (tkhunny):
Is that \[9^{x+14}\] or \[9^{x} + 14\]?
OpenStudy (anonymous):
the upper one
OpenStudy (tkhunny):
Well, that makes it possible. If it were the other, there woudl be no exact solution. Observe that 9 = 3^2. This nearly completes the problem.
OpenStudy (anonymous):
should i log both side? cuz if i do that, log 14 is a big mess
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (tkhunny):
Did you use the hint?\[9^{x+14} = 3^{x+2}\] Using the hint, we have \[\left(3^{2}\right)^{x+14} = 3^{2x+28} = 3^{x+2}\] It is now pretty easy IF you see it. Do you?
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
urlocalgay:
The probability of selecting a purple balloon is 0.24. The probability of selecting a purple balloon, given that the balloon has glitter, is 0.
1 hour ago
2 Replies
0 Medals
persephone:
The emergency notification echoed in the theater as everyone reached for their phones to discover what was interrupting their movie.
1 hour ago
10 Replies
0 Medals