
Решение квадратных неравенств

Quiz
•
Mathematics
•
8th Grade
•
Hard
Макпал Пашан
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Решите неравенство x^2 - 4 < 0.
x ∈ (-2, 2)
x ∈ (-1, 1)
x ∈ (-3, 3)
x ∈ (-4, 4)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Найдите интервалы, для которых неравенство 3x^2 + 2x - 1 > 0 выполняется.
x ∈ (-∞, -1) U (1, ∞)
x ∈ (-∞, -1) U (1/3, ∞)
x ∈ (-∞, -1/3) U (1/3, ∞)
x ∈ (-∞, 1/3) U (1, ∞)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какие значения x удовлетворяют неравенству x^2 + 6x + 9 ≥ 0?
Нет решений
x = 0
Любые значения x удовлетворяют неравенству x^2 + 6x + 9 ≥ 0
x = -3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Решите неравенство 2x^2 - 5x + 2 < 0.
0.5 < x < 2
1 < x < 3
x < 0
x > 4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Найдите интервалы, для которых неравенство x^2 - 9 > 0 выполняется.
(-∞, -3) ∪ (3, 5)
(-∞, -3) ∪ (3, +∞)
(-∞, -3) ∪ (3, 9)
(-∞, -3) ∪ (3, 0)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какие значения x удовлетворяют неравенству -x^2 + 4x - 4 ≤ 0?
x > 2
x < 0
x = 4
0 ≤ x ≤ 2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Решите неравенство 5x^2 + 2x - 3 ≥ 0.
x ≤ 0.6 or x ≥ -1
x ≤ -0.6 or x ≥ 1
x ≤ -1 or x ≥ 0.6
x ≤ -1 or x ≥ 1
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