Variable use between CAS and Home.

[Skyblues]

Anyone have any ideas on how to use variables between Home and CAS?
I just ran into the same issue in reverse (took me 20 minutes to figure out what was wrong).

I put the following expression into the Function Symb:
X^2+4*X-5

Then I plotted it ... all is well.

Now, I want to factor it so I do the following:

1. Highlight X^2+4*X-5 and copy
2. Go to CAS
3. Select Toolbox > Algebra > Factor

paste expression into factor and get this result:
−8.58601465676

Ah, what's going on? what did I do wrong??? This is the answer I want:
(x-1)*(x+5)

As it turns out, the 'X' from Home is upper case and CAS wants lower case 'x'.

Do I really have to manually change all the x's between Home and CAS?

Thanks,
Jim