Giá trị nào của m thì pt là tam thức bậc 2

Toán

Quiz
•
Mathematics
•
10th Grade
•
Easy
KHANG Duy
Used 7+ times
FREE Resource
80 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
M không thuộc 3
M lớn hơn hoặc bằng
Bé hơn hoặc bằng 3
M bằng 3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đồ thị 1:2 thì khẳng định nào đúng
< 0 x thuộc !
<0 x thuộc (1:2)
X>0 x thuộc !
>0 x thuộc (1:2)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đồ thị -4:1 ta có f > hoặc = 0 khi nào
Ngoặc tròn (-4)(1)
Ngoặc tròn ngoặc vuông (-4] [1)
Ngoặc tròn (4:1)
Ngoặc vuông 4:1)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho đồ thị 1 : 4 Đặt đenta =b²-4ac tìm dấu a và đenta
A>0 , đenta >0
A<0 , đenta >0
A>0 , đenta =0
A<0 , đenta =0
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bất phương trình nào sau đây là bất pt bậc 2 một ẩn
X-5x²-7>0
-2x²+y²>0
X²-2x+3< hoặc=0
3x-4>0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tam thức x²-4 âm khi nào
(-2;4)
(-2;2)
(2;4)
(-2;+vô cực )
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tạp nghiệm của bpt x²-4x+3< hoặc =0 là
(1:3)
(-vô cực : 1)
[1:3]
(-1:3)
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