
BÀI 2 LỚP 8
Authored by C2 Sam
History, Mathematics
8th Grade
Used 3+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Bài 1 : Tính.
a) 3(2x - 3)
Đáp án khác
6x - 9
6x + 9
6x - 3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Bài 1 : (1 điểm) Tính.
b) 3(3x - 8) + 6x - 2
15x - 22
15x - 26
15x + 26
Đáp án khác
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Bài 1 : (1 điểm) Tính.
c) (x - 3)(x + 3) - (x - 5)
x - 5
Đáp án khác
10x-34
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Bài 2 : (1 điểm) Tìm x, biết.
a) x(x - 3) + 2(x - 3) = 0
x=3 hoặc x=-2
x=3 và x=-2
x=3
x=-2
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Bài 2 : (1điểm) Tìm x, biết
d) (2x - 3)(3x - 4) = 0
x=1
Đáp án khác
x=4/3 và x=3/2
x=4/3 hoặc x=3/2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Bài 3 : (1 điểm) Rút gon rồi tình giá trị biểu thức A tại x = -1.
A = (x + 1)(x2 - x + 1) - (x - 1)(x2 + x + 1) + x
A = 0
A = 2
Đáp án khác
A = 1
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Bài 5 : Tìm giá trị nhỏ nhất của biểu thức :
P = x2 - 6x -11
2
-2
-20
19
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