Ordering of expressions

[compsystems]

How I can do, so that the CAS displayed, orderly algebraic expressions, as they appear in the books of algebra


expand((x+y+z)^2) -> 2*x*y + 2*x*z + 2*y*z + x^2 + y^2 + z^2 =(

-> x^2 +2*x*y + 2*x*z + y^2 + 2*y*z + z^2 =)

[Tim Wessman]

tap simplify

expand doesn't touch the ordering because changing the order all around kind of defeats the purpose of the expansion I think.

reorder(...) lets you do it according to a specific variable order you set.

[compsystems]

Please include a flag automatic ordering in the next firmware, otherwise a presentation in a classroom requires simplify repetitively

[DrD]

Would it be practical to enhance the expand() command to include an optional vector of variables?

expand((x+y+z)^2); // ==> 2*x*y+2*x*z+2*y*z+x^2+y^2+z^2

reorder(expand((x+y+z)^2,[x,y,z])); // ==> x^2+2*x*y+2*x*z+y^2+2*y*z+z^2

[Suggestion for enhancement]
expand(Expr, [Variables]); // Enhancement: (optionally), include result reordering.

-Dale-