GRE数学考点《Distributive Law》举例分析

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=32x+3y,

3a=3a2x+3ay,

3x=3x2x+3xy.

=2x+y=3x2x+42x+3xy+4y.

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/.

For division, the sum and difference in the denominator cannot be distributed ://2x+/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。