新GRE数学要点:Algebraic Expression

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Algebraic Expression 　　One or many terms connected by algebraic operations is called an algebraic expression. The operations between the terms must be valid to yield an expression.
' G4 t6 ~) S# C9 V, Y) Y　　Example
5 ?5 r2 c7 p( N6 S( D　　(3x+5),(ax2+c),and (xy+a)(x+y) are all algebraic expressions.
　　(2x+5)+·(3x) is not an expression since + followed by· is not a valid sequence of operations.
0 X, _! o1 y9 s% K) B( P　　Remember
　　There is no=sign in an expression.
　　由于美国数学基础教育的难度增加导致数学考试越来越难，但新gre数学复习考点都是高中时候学到的知识点，考生不要过于紧张，把基本概念弄明白，再记住一些新版gre数学必备的词汇，那么相信新版gre数学应该没有问题。