That is as far back as you can go. Maple knows several special constants, whose names you should avoid using as variables. The name of this one is Pi, not pi. The default precision for floating point is 10 significant digits. Maple uses I for the square root of -1.
Maple can factor polynomials.
Maple uses the abs command for absolute value. Solve can also handle systems of equations. The erf function is the error function. The sum command is quite useful. Maple is good at taking limits.