toán của hẹ nó làm nè

Quiz
•
Mathematics
•
10th Grade
•
Medium

Kim Hằng Dương Nguyễn
Used 1+ times
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
⊘
R
(-∞;-1)u(3;+∞)
(-1;3)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
số nào sau đây không phải là nghiệm của bpt: x²-9x+20>0
1
4
-2
6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
nghiệm của bất phương trình: -x²+6x+7≥0
6
-2
-5
9
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
số nghiệm của phương trình: √x²-2x-3=√2x²+x-3 là
1
2
0
3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tập nghiêmh của bpt: √x²-3x+1=x-1 là:
S={1}
S={2}
S={0}
S={⊘}
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