Hệ thức Vi-Ét
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Hải Đức
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15 questions
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1.
FLASHCARD QUESTION
Front
Điều kiện cần để sử dụng hệ thức Vi-ét là gì?
Back
Δ >= 0
2.
FLASHCARD QUESTION
Front
Khi nào thì phương trình bậc 2 có nghiệm kép?
Back
Δ = 0
3.
FLASHCARD QUESTION
Front
Back
x # 4
4.
FLASHCARD QUESTION
Front
Back
2 - m
5.
FLASHCARD QUESTION
Front
Tính tổng hai nghiệm của phương trình: x2 − 6x + 7 = 0
Back
6
6.
FLASHCARD QUESTION
Front
Tính tổng hai nghiệm của phương trình: −3x2 + 5x + 1 = 0
Back
5/3
7.
FLASHCARD QUESTION
Front
Tính giá trị của biểu thức A = x12 + x22 với x1; x2 là nghiệm của phương trình x2 − 5x + 2 = 0.
Back
21
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