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新GRE数学考点:Distributive Law.

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  今天针对新gre数学复习,小编给大家整理的是关于Distributive Law的相关内容,这些概念在考试中一定会考到的。希望考生能再接再厉,取得一个好成绩,突破新gre数学难的困境。

  Distributive Law

  Like real number, when multiplying a sum or difference of terms, the distributive property of multiplication allows us to distribute the multiplying term among the terms being added or subtracted.

  Example:

  3*(2x+y)=3*2x+3*y,

  3a*(2x+y)=3a*2x+3a*y,

  3x*(2x+y)=3x*2x+3x*y.

  (3x+4)*(2x+y)=(3x+4)*2x+(3x+4)*y=3x*2x+4*2x+3x*y+4*y.

  Remember:

  Do not forget to multiply all the terms inside the parenthesis.

  For division, the sum and difference in the numerator can be distributed:(x+y)/(2x+y)=x/(2x+y)+y/(2x+y).

  For division, the sum and difference in the denominator cannot be distributed :(x+y)/(2x+y)≠(x+y)/2x+(x+y)/y.

  俗话说:“工欲善其事必先利其器”。有一部分考生认为新GRE数学具有一定的难度,这其中的原因是由于考生在复习时没有把新gre数学的基础打牢。想要新gre数学考好,复习的时候一定要把基本概念和重要考点都弄扎实。

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