This is my first post. I'm studying electrical engineering.
My Classpad 330 is a giant step up from my old FX-115!

Please help me to understand the order of entry: I'm trying to input an equation with a variable. I'd like to change the variable and get a new output. Unfortunately, I'm doing something wrong.
Ex. (2X^2-8)/(x^2-1)
Can I just change the variable, then re-execute the equation for a different output? I also have to remember to input a negative number in parenthesis before squaring it. (-3)^2 is not -3^2.
If you have any other helpful advice, please tell me.
Thanks in advance,
Rob in Ohio