
Bất Phương Trình và Nghiệm
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Mai van Tin
Used 1+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bất phương trình bậc nhất một ẩn có dạng:
ax + b ≥ 0 với a ≠ 0
ax + b < 0 với a ≠ 0
ax + b > 0 với a ≠ 0
Tất cả các đáp án trên
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vế phải của bất phương trình 2x + 3 > 55 là:
2x + 3.
2x.
55.
2.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hãy chọn câu đúng, x = -3 là một nghiệm của bất phương trình?
2x + 1 > 5
7 - 2x < 10 - x
2 + x < 2 + 2x
-3x > 4x + 3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cho các số thực x; y; z biết x < y. Khẳng định nào sau đây là sai?
x - z < y - z
x + z < y + z
xz < yz nếu x dương
xz < yz nếu x âm
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Bất phương trình x - 2 > 4, phép biến đổi nào sau đây là đúng?
x > 4 - 2
x < 4 + 2
x > -4 -2
x > 4 + 2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Bất phương trình -5x > 4, phép biến đổi nào sau đây là đúng?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Nghiệm của bất phương trình 13x - 25 < 1 là
x > 2
x < 2
x > 12
x < 12
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