HP50G Complex Number CAS manipulations

[Gilles]

Quote:Let's suppose, we have the equation
z^2 − z = 0 and we want to solve for z, which is complex.

to solve this, I just do :

1/ Verify you are in complex mode (LShift & i to toggle mode if necessary)
2/ 'z^2 − z' 'z' SOLVE

For the ABS see flag 128 (variables are only real, or variables can be complex) (but it's unclear for me what does exactly this flag)