新GRE数学全部考点及解析（12）.

新GRE数学考试要求的是中学的数学知识，考生们对于新GRE数学上面来说还是比较有把握，不过说到具体的GRE数学考点要求就不一定这么清楚。下面就为大家介绍新GRE数学考点及这些GRE数学考点解析，帮助考生们系统的复习一遍新GRE数学，梳理整合新GRE数学考试所需要的知识。

　　GRE考试数学考点：Subtracting Monomials 　　Subtracting Monomials 　　To subtract a monomial from another of the same variables just subtract the coficients. Only two like monomials can be subtracted from each other. 　　Example: 　　By subtracting 3x from 4x, we get (4-3)x=x. 　　By subtracting 3xy from 2xy, we get (2-3)xy=-xy. 　　By subtracting bx from ax, we get ax-bx=(a-b)x. 　　Remember: 　　Monomials can be subtracted only if they have the same variables with identical powers. 　　GRE考试数学考点：Combinations of Choices 　　Combinations of Choices 　　If there are n choices for one type and m choices for second type, then number of combinations for both types is the product of choices:n*m. 　　Example: 　　If there are 3 kinds of breads to choose from and 4 kinds of meats, then we can make 3*4=12 different sandwiches. 　　If an alphabet has 26 letters, then the number of possible 2 letter word is 26*26=676.All of them may not be vaild words. 　　Remember: 　　Do not add the choices to get the total combinations. 　　The product rule can be applied to more than two types of choices: if there are 3 kinds of breads, 4 kinds of meats, and 6 kinds of cheeses, then we can make 3*4*6=72 different sandwiches. 　　以上就是新GRE数学考点及GRE数学考点解析的介绍，希望这些知识点的介绍可以帮助大家复习新GRE数学，为大家复习新GRE数学提供条件。希望考生们认真复习新GRE数学考试，能够取得自己理想的成绩。澳际也会不断的为大家分享更多有助于考生们复习考试的新GRE考试材料及技巧。