每日一题

Mathematics>Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

(2.5m^2-10)/(2.5m^2-10m+10)
Which of the following is equivalent to the expression above, for m<-2?

A.(m+2)/(m-2)
B.(m-2)/(m+2)
C.m+2
D.1/(m-2)

答案和解析

答案：A

解析：

Choice A is correct.