

3-1-6
Interactive Video
•
Education
•
8th Grade
•
Hard
余武蔚 余武蔚
Used 1+ times
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4 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
為什麼 (a-b) 和 (b-a) 通常不相等?
減法具有結合律。
減法沒有交換律。
減法具有分配律。
減法沒有單位元素。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(a-b) 和 (b-a) 之間有什麼關係?
它們總是相等的。
它們總是互為相反數。
它們總是互為倒數。
它們之間沒有固定的關係。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(a-b)² 和 (b-a)² 之間有什麼關係?
它們總是相等的。
它們總是互為相反數。
它們總是互為倒數。
它們之間沒有固定的關係。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果 n 是一個奇數,那麼 (a-b)^n 和 (b-a)^n 之間有什麼關係?
它們總是相等的。
它們總是互為相反數。
它們總是互為倒數。
它們之間沒有固定的關係。
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