
Bất đẳng thức

Quiz
•
Mathematics
•
9th Grade
•
Hard
Huyền Thanh
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
n lớn hơn 2
n không lớn hơn 2
n nhỏ hơn 2
n không nhỏ hơn 2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho các số thực x, y, z biết x < y. Khẳng định nào sau đây là SAI?
x + z < y + z
xz < yz nếu z âm
xz < yz nếu z dương
x - z < y - z
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hệ thức nào sau đây là bất đẳng thức?
1 - x = 0
x2 - 5x + 2 = 0
x = y
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bất phương trình 2x - 4 > 3x + 3
x < - 7
x > -7
x < 7
x > 7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho a, b, c là ba số thực thỏa mãn b > c và a > b. Khẳng định nào sau đây đúng?
a > c
c > a
b > c
a > b
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
x < 3 hoặc x > -3
x < -3 hoặc x > 3
-3 < x < 3
x < -3 và x > 3
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
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