Question 16 Select one or more answer choices
收藏
笔记
反馈
我的笔记
5000
保存
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
If a, b, and c are real numbers, which of the following must be true?

A.a+(b+c)=(a+b)+c

B.a-(b-c)=(a-b)-c

C.a*(b*c)=(a*b)*c

D.abc=abc

我的答案: