Factoring in CAS

[ktate749]

Just learning to use the calculator but I keep being disappointed with what the help button or the user's manual says should happen and what actually happens. The latest problem concerns simple factoring of a polynomial. Both the user manual and the help button say that in CAS mode for factor(x^4-1) I should get as an answer (x-1)*(x+2)*(x^2+1). What I actually get is a message that says "Run ifactor(-1) for integer factorization". Hitting Enter again shows the input function and an answer of -1. If I use the ifactor function from the Integer menu I get as an answer -1.
Using my own example x^2+5*x+6 knowing the factors are (x+2)*(x+3) I get the same message but with "ifactor(6)" in it and an answer of 6. If I run the ifactor function the answer is given as 2*3. This is very different from what I'm led to expect. Does anyone else have these same problems?