Evaluation Prefix
Expression: + 9 * 2 3
Steps: 1.Start from the rightmost operand: 9 and * 2 3.
Steps: 2.Evaluate * 2 3 → 2 * 3 = 6.
Steps: 3.Add 9 +
6 = 15.
Result: 15
Evaluation Postfix
Expression: 9 2 3 * +
Steps: 1.Start with the first operator *: 2 * 3 = 6.
Steps: 2.Add 9 + 6 = 15.
Steps: 3.Add 9 + 6 = 15.
Result: 15