
Quiz Toán 12 - HK1
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Easy
Ngọc Phúc
Used 1+ times
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60 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình bậc hai có dạng nào?
ax + b = 0
ax^3 + bx^2 + c = 0
ax^2 + b = 0
ax^2 + bx + c = 0
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Để phương trình bậc hai có nghiệm, điều kiện nào sau đây là đúng?
Δ > 0
Δ = 0
Δ < 0
Δ = 1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giá trị của Δ trong phương trình bậc hai được tính như thế nào?
Δ = b^2 - 4ac
Δ = 4b - ac
Δ = a^2 + b^2 + c^2
Δ = 2b + 2c
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nếu Δ = 0 thì phương trình bậc hai có bao nhiêu nghiệm?
Vô nghiệm
Hai nghiệm phân biệt
Một nghiệm kép
Ba nghiệm
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Điều kiện nào để phương trình bậc hai có hai nghiệm phân biệt?
Δ < 0
Δ = 1
Δ = 0
Δ > 0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Định lý Viète cho biết điều gì về nghiệm của phương trình bậc hai?
Cả hai đều đúng
Không có thông tin
Tích nghiệm bằng c/a
Tổng nghiệm bằng -b/a
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dấu của nhị thức bậc nhất f(x) = ax + b phụ thuộc vào điều gì?
Cả a và b
Không phụ thuộc
Giá trị của b
Giá trị của a
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