兩根之和及兩根之積
Authored by Cheng Angela
Mathematics
9th - 12th Grade
Used 1+ times
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11 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
求 x2 + 7x + 2 = 0 的兩根之和及兩根之積。
兩根之和= -7, 兩根之積=2
兩根之和= -7, 兩根之積= -2
兩根之和= 7, 兩根之積=2
兩根之和= 7, 兩根之積=- 2
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
求 x2 – 3x – 8 = 0 的兩根之和及兩根之積。
兩根之和= – 3, 兩根之積= – 8
兩根之和= 3, 兩根之積= 8
兩根之和= – 3, 兩根之積= 8
兩根之和= 3, 兩根之積= – 8
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
求 x2 + 5x + 6 = 0 的兩根之和及兩根之積。
兩根之和= -5, 兩根之積= -6
兩根之和= -5, 兩根之積=6
兩根之和= 5, 兩根之積= -6
兩根之和= 5, 兩根之積=6
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
求 x2 + 2x – 8 = 0 的兩根之和及兩根之積。
兩根之和= – 2, 兩根之積= – 8
兩根之和= 2, 兩根之積= 8
兩根之和= – 2, 兩根之積= 8
兩根之和= 2, 兩根之積= – 8
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
求 x2 – 4x + 4 = 0 的兩根之和及兩根之積。
兩根之和= 4, 兩根之積= -4
兩根之和= -4, 兩根之積= -4
兩根之和= 0, 兩根之積= 4
兩根之和= 4, 兩根之積= 4
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
求 x2 + 6x + 9 = 0 的兩根之和及兩根之積。
兩根之和= -6, 兩根之積= -9
兩根之和= 6, 兩根之積= -9
兩根之和= -6, 兩根之積= 9
兩根之和= 6, 兩根之積= 9
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
若 α 和 β 是方程x2 + 3x – 4 = 0的根，求α + β 的值。
3
– 3
4
– 4
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