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Mathematics 4 Online
OpenStudy (anonymous):

divide.

OpenStudy (anonymous):

3n^2 - n/ n^2 - 1 / n^2/ n+1

OpenStudy (anonymous):

\[\frac{ 3n^2-n }{ n^2-1}\div \frac{ n^2 }{ n+1 }\] is that what you mean?

OpenStudy (anonymous):

yes :)

OpenStudy (anonymous):

Ok, recognize that n^2-1 is a perfect square, and then we can rewrite the problem as \[\frac{ 3n^2-n }{ (n-1)(n+1) }*\frac{ n+1 }{ n^2 }\]

OpenStudy (anonymous):

Hope that helps

OpenStudy (anonymous):

\[\frac{ 3n ^{2}- n }{ n-1 } \times \frac{ 1 }{ n ^{2} }\]

OpenStudy (anonymous):

shall i also cancel the n^2 out?

OpenStudy (anonymous):

I dont think so without getting it messy. But factor out a n from the 3n^2 and cancel

OpenStudy (anonymous):

so the answer is \[\frac{ 3-n }{ n-1}\] ?

OpenStudy (anonymous):

Uhmm not quite,

OpenStudy (anonymous):

\[\frac{ 3n-1}{ n^2-n }\]

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