
一元二次不等式-2
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Mathematics
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10th Grade
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Practice Problem
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Medium
Used 1+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
解一元二次不等式 x² - 4x + 3 < 8
-1 < x < 5
x < -1 或 x > 5
-5 < x < 1
x < -5 或 x > 1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
解一元二次不等式 15 + x - 2x² < 0
-5/2 < x < 3
x < -5/2 或 x > 3
x < -3 或 x > 5/2
-3 < x < 5/2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若二次不等式 x2 + ax + b < 0 的解為 -4 < x < 7,則數對 (a, b) 為何?
(-3, -28)
(3, 28)
(-3, 28)
(3, -28)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
x = -5
無解
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
解一元二次不等式 x2 + 3x + 4 > 0。
x > 0
x < 0
x 是任意實數
無解
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
x < -5/4 或 x > 1/2
-5/4 < x < 1/2
x > 1/2
x < -5/4
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