
3-2-1
Interactive Video
•
Education
•
8th Grade
•
Medium
余武蔚 余武蔚
Used 1+ times
FREE Resource
4 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在十字交乘法中,因式分解二次三項式的第一步是什麼?
找出常數項的因數。
將二次項分解成兩個一次項的乘積。
檢查交叉相乘的結果是否等於中間項。
將分解後的因式橫向寫出。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在因式分解 x² + 5x + 6 時,如何找到常數項 6 的兩個數字?
兩個數字相加等於 6,相乘等於 5。
兩個數字相乘等於 6,相加等於 5。
兩個數字相減等於 6,相加等於 5。
兩個數字相除等於 6,相減等於 5。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在十字交乘法中,交叉相乘的結果(例如 2x + 3x = 5x)應該與二次三項式的哪一部分相符?
二次項。
常數項。
中間項(一次項)。
任何一項都可以。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
利用十字交乘法因式分解 x² + 7x + 12,其結果為何?
(x + 2)(x + 6)
(x + 3)(x + 4)
(x + 1)(x + 12)
(x - 3)(x - 4)
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