本文为大家介绍的GRE数学复习考点是“结合律”。

新版GRE数学复习重要考点：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.