3-1-7(練習題)
Interactive Video
•
Education
•
8th Grade
•
Medium
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
在因式分解形如 2a^2 - 8 的多項式時，第一步通常是什麼？
直接使用平方差公式
提出公因式
將常數項改寫為平方數
將變數項改寫為平方數
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
因式分解 2a^2 - 8。
2(a-2)^2
2(a+2)(a-2)
2(a^2-4)
2(a+4)(a-4)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
因式分解 -18x^2 + 50。
-2(3x+5)(3x-5)
2(3x+5)(3x-5)
-2(9x^2-25)
-2(3x-5)^2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
因式分解 (x+1)^2 - 9。
(x+1)(x-3)
(x+4)(x-2)
(x+1)^2 - 3^2
(x-2)(x-4)
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