A. NotesPlease refer here for how to turn an infix expression to prefix or postfixB. Hw (One question does not show correctly, please skip that one.)
2 8 * 5 2 ^ + 9 3 / -
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9 + / * - 7 4 5 ^ 3 7 2 8 +
3 4 + 5 * 6 4 + 2 / - 2 ^
7 5 + * / - 8 3 2 - 4 2 ^