Can anyone help me with this question?
Convert the following infix expressions to either prefix or postfix form as requested.
(9.1) A - B + C (prefix form)
(9.2) A / ( B * C ) (prefix form)
(9.3) A + B * C (postfix form)
(9.4) ( A + B ) * C (postfix form)
(9.5) A + B * C - D (postfix form)