Expand expression with ti-nspire cx cas

[farefernandez]

Hi all!

I'm trying to uderstand how to expand an expression such as

$mathjax$\frac1x - 1$mathjax$

to the less concise:

$mathjax$\frac{1-x}x$mathjax$

I'm using a ti n-spire cx cas. Apparently, the expand function won't expand this kind of expression.

Thanks!

[Bisam]

This is not expansion but factorisation !
Just do : factor(1/x-1) and you'll get what you want.

If you want get the same (common) denominator without factorisation, you can also do : comdenom(1/x-1)

[farefernandez]

Thanks! It worked perfectly