
Câu hỏi Toán học
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
Cuong Pham
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các phương trình sau, phương trình nào là phương trình bậc nhất một ẩn?
3x-2 = 0
x2 + 20 = 0
0.x + 5 = 0
X + y =0
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giá trị x = 3 là nghiệm của phương trình nào sau đây?
x - 3 = 0
x + 3 =0
3x + 3 = 0
3x - 3 = 0
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho hình chữ nhật có chiều rộng là x cm (x > 0). Chiều dài hơn chiều rộng 3cm. Biểu thức nào sau đây biểu thị diện tích của hình chữ nhật đó
(2x + 3)2
x + 3
x2 + 3
x(x + 3)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình 2x + 20 = 0 có nghiệm:
x = 10
x = -10
x = 20
x = -20
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quy đồng mẫu hai vế của phương trình 13x-2-x-12=151-x ta được mẫu chung là:
6
10
30
15
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