SAT官方每日一题数学(9.1)

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摘要:9月1日SAT官方数学每日一题,持续更新中

9.1 SAT官方数学每日一练

Mathematics>Standard Multiple Choice


If w is nonzero, which of the following expressions is equivalent to the expression above?

A:0

B:1

C:

D:

Answer B

EXPLANATION

Choice B is correct. Rewrite the expression using the following fact:

Xm·Xn=X(m+n)

The expression becomes


Proceed using another fact:


The equivalent expression is 1.

难度系数:简单

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