Infix (a + b) * (c - d) (- a) + (d - c) a + (c - d) + b Prefix ( * (+ a b)(- c d) ) ( + (- a) (- d c) ) ( + a ( + (- c d) b ) ) Postfix ( (a b +) (c d -) * ) ( (a -) (d c -) + ) ( ( a (c d -) + ) b + )(Edited: 2021-10-20)
(a + b) + (c - d) prefix: (+ (+ a b) (- c d)) postfix ((a b +) (c d -) +) (- a) + (d - c) prefix: (+ (- a) (- d c)) postfix: ((a -) (d c -) +) a + (c - d) + b prefix: (+ a (- c d) b) postfix: (a (c d -) b +)