
công thức nghiệm thu gọn
Authored by Hanh Hanh
Mathematics
9th Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1. [NB] Cho phương trình , đặt b = 2b' . Điều nào sau đây là đúng?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2. [NB] Cho phương trình . Các hệ số a; b'; c lần lượt bằng
a= 4; b'= 2; c= 1
a= 4; b'=-2; c= 1
a= 1; b'= 2; c= 4
a= 2; b'= -2; c= 1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
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C
D
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
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B
C
D
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
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C
D
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
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