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Understanding Calculations and Reverse Polish Notation Students sometimes have difficulty using the order of operations when evaluating expressions. By converting these expressions into binary expression trees before evaluating them, students gain a better understanding of the order of operations. In addition, students learn to represent algebraic expressions using prefix notation, which is often called &quot;Polish Notation,&quot; because of the nationality of its inventer, Polish logician Jan &#321;ukasiewicz.
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