HP 48SX real/complex algebra

[Rick314]

(06-25-2024 11:37 PM)Gil Wrote:  'RE((RE(A)+RE(B)*i)*(RE(C)+RE(D)*i))'
And you will get...
'-(RE(D)*RE(B)-RE(C)*RE(A))'

Thank you Gil, but what steps are done at "And you will get..."? I tried various combinations of EXPAN, COLCT and EVAL on my HP 48SX and can't seem to get the result you show.