関連ワード:  give an example of an expression    give an example of an expression that is not a polynomial    give an example of an expression with four terms    give an example of an expression with three terms    give an example of an expression with two variables    give an example of an expression in c    give an example of an expression that has no reference    give an example of an algebraic expression    give an example of an algebraic expression which is not a polynomial    give an example of an idiomatic expression