新GRE数学要点:Associative Law
Associative Law Like real numbers, the grouping does not affect the product or sum of 3 or more algebraic terms.Example:
Sum:2x2+(4y+1)=(2x2+4y)+1,
3x+(2xy+5y+2)=(3x+2xy)+(5y+2)=(3x+2xy+5y)+2.
Product:3x*(2y*4xy)=(3x*2y)*4xy=3x*2y*4xy.
Remember:
Typically, same variable is grouped together in a single term and the product of same variable is expressed as power.
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。
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