* Janos Blazi wrote: > (/ (+ (- b) (sqrt ( - (* b b) (* 4 (* a c))))) (* 2 a)) > ot something like that (I have not checked if the formula is > correct) still looks messy and I wonder if practicing would help. I > can see immediately if the infix form is correct, though. Mathematical expressions are the only place where I find infix better, certainly. --tim