CÔNG THỨC NGHIỆM-HỆ THỨC VI-ET
Authored by Ty Tran
Mathematics
9th Grade
Used 40+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình x2 +4x-m=0 có nghiệm khi:
m>-4
m<4
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Phương trình x2+5x-6=0 có nghiệm là:
1; 6
1; -6
-1;6
-1; -6
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Phương trình x2+4x-m=0 vô nghiệm khi
m=4
m<-4
m>-4
m=-4
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Phương trình x2+4x-m=0 có nghiệm kép khi
m=4
m=-4
m=8
m=-8
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Phương trình x2+2mx-5=0 có bao nhiêu nghiệm
0
1
2
vô số
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