Evaluate the expression if b = - 2. ?
|b|
-2
0
2
1
Which of the following is the correct answer?
回答 (11)
✔ 最佳答案
2..................
2
the absolute value |x| ignores the negative sign
|b| means the absolute value of b. So the answer is 2.
|b|
= |-2|
= +2 (positive 2)
2
here's the explanation:
IbI means absolute value of b or its distance from zero on the number line. if it's -2, then it's distance is still 2.
I agree with the others, it is 2.
If b= -2, then b does equal minus 2
收錄日期: 2021-05-01 11:16:14
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080930050100AAHzrKo
檢視 Wayback Machine 備份