Ask
your own question, for FREE!
Ask question now!
Mathematics
14 Online
OpenStudy (anonymous):
solve
13 years ago
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
Solve what lol
13 years ago
OpenStudy (anonymous):
he's not done yet putting the problem i guess
13 years ago
OpenStudy (anonymous):
|dw:1365609789531:dw|
13 years ago
OpenStudy (anonymous):
I know lol ;D
13 years ago
OpenStudy (anonymous):
You got this @Lynncake
13 years ago
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
lol, i thought you;re here too @MyCharms
13 years ago
OpenStudy (anonymous):
Yea.. lol
13 years ago
OpenStudy (anonymous):
\[x=(2+\sqrt{3})^3\]Your first step is to make this into \[x^3\]
13 years ago
OpenStudy (anonymous):
there I gave you best response LOL
13 years ago
OpenStudy (anonymous):
Bye ;D
13 years ago
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
lol @MyCharms
13 years ago
OpenStudy (anonymous):
Haha ok
13 years ago
OpenStudy (anonymous):
I did respond @msingh
13 years ago
OpenStudy (anonymous):
i m not talking abt u
13 years ago
OpenStudy (anonymous):
ohhh ok, so did you make x to be x^3?
13 years ago
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
i think if i make x^3..it would beget lengthy
what i think satatement is wrong
13 years ago
OpenStudy (anonymous):
Or you could expand \[(2+\sqrt{3})^3\]a bit tedious
13 years ago
OpenStudy (anonymous):
hmmm
13 years ago
OpenStudy (anonymous):
here: \[x=(2+\sqrt{3})^3\]\[x^3=((2+\sqrt{3})^3)^3\]\[x^3=(2+\sqrt{3})^9\]
13 years ago
OpenStudy (anonymous):
get that @msingh Now ready for the second one?
13 years ago
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
yes
13 years ago
OpenStudy (anonymous):
We now know that \[x^3=(2+\sqrt{3})^9\]Since we are finding \[x^3+\frac{ 1 }{ x^3 }\]We have to find \[\frac{ 1 }{ x^3 }\]which is just the reciprocal of x^3. Now \[x^3=(2+\sqrt{3})^9 \rightarrow \frac{ 1 }{ x^3 }=\frac{ 1 }{ (2+\sqrt{3})^9 }\]You can now combine those two in order to get what you are finding. Get it @msingh ?
13 years ago
OpenStudy (anonymous):
yes
@Lynncake
thank u
13 years ago
OpenStudy (anonymous):
you're welcome :)
13 years ago
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!
Sign Up
Ask Question