
Đa thức và biểu thức đại số
Authored by Thái Nguyễn
Mathematics
University
Used 2+ times

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22 questions
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1.
OPEN ENDED QUESTION
2 mins • 1 pt
Giá trị của biểu thức: 2x3 + y3 + 3z3 tại x = y = z = 1 là:
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2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tính: 4x3 - x3 = ?
x3
2
1
3x3.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Liệt kê các hạng tử của đa thức: A = -2x5 + x - 4.
2x5, x
-2x5, x, 4
-x5, -3x, -4
-2x5, x, -4
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cho đa thức A(x) = x^4 + 3x^3 + 2x; B(x) = x^3 + 2; C(x) = −x^4 + 2x^3 − 9 . Tính A(x) − B(x) + C(x).
4x^3 + 2x − 11
4x^3 − 2x − 11
2x^4 + 4x^3 + 2x − 11
4x^3 + 2x + 11
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tính tổng của hai đa thức sau: x2 + 2x - 2 và 3x - 5 ?
x2 + 5x
x2 + 5x - 7
x2 + 5x + 7
x2 - 5x - 7
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Trong các biểu thức sau đây, biểu thức nào là đơn thức một biến?
x^2 + 2x + 1
4y + 12
9x
y^3 + 13y − 5
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Viết biểu thức đại số biểu thị "Hiệu của gấp đôi số a và số b"
a - b
a + b
2a - b
2a + b
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