Little help with TI-nspire

[8039]

How do I get it to factorize things? like I type in "factor 3x^2 - 6x" and it doesn't do anything.


And how do I see the coordinates for a specific point on a graph? like f(x)=x^2 and I want to see the corresponding y value at x=512 (obviously I can do this by hand, but it'd be useful to know how to do it on calculator too)

[coletrain]

for factorising did you use brackets ie factor((3x^2-6x))

for getting points of a graph, have you tried Graph Trace. MENU:5:1

[8039]

for factorising did you use brackets ie factor((3x^2-6x))

for getting points of a graph, have you tried Graph Trace. MENU:5:1

Hey yeah I used brackets... and it seems to work for most equations. How do I get it to factor 2x^2 - 6x?

And trace works, thanks! I can even find the corresponding y value if I type in the x value, too bad I can't figure out how to do the opposite :/

[iNerd]

factor(2x^2-6x)
hit ENTER
answer is 2x(x-3)

Useful commands and functions of the TI-nspire for basic operations on this site:
http://www.essentialmaths.com.au/vels_student/files/Year9_tinspire.pdf

[dyaner]

The calculator does not factorise every single expression, it's what I discover what is happening to you. This means you  just have to factorise it manually.

[the.watchman]

Also, for things like factorising , which has irrational terms in its factorised form, you need to type: