
M8 GKI (23-24)
Authored by Trang Ms
Mathematics
8th Grade
Used 3+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các biểu thức sau biểu thức nào là đơn thức?
2 + x2y
– 1/5 x4y5
(x + y2) / 3y
(– 3/4) x3y + 7x
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chọn đáp án sai?
√2 là đa thức
0 không phải là đa thức
– 0,5x4y5t là đa thức
– 3/4 x3y + 7x là đa thức
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sau khi thu gọn đơn thức 2aba2(–3)2b2 được:
– 12a2b2
– 12a3b3
18a3b3
– 18a3b3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kết quả x2 – 4y2 là:
x2 – 2y
x2 + 2y
(x – 2y)(x + 2y)
(x – 4y)(x + 4y)
Answer explanation
x2 – 4y2 = x2 – (2y)2 = (x - 2y)(x + 2y)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kết quả 8x3 + 12x2y + 6xy2 + y3 là:
(2x)3 + y3
(8x + y)3
(2x + y)3
(2x – y)3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chọn câu sai?
x2 – 6x + 9 = (x – 3)2
4x2 – 4xy + y2 = (2x - y)2
x2 + x + 1/4 = (x + 1/2)2
– x2 – 2xy – y2 = – (x – y)2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quan sát hình chóp S.ABCD cho biết đâu là đường cao của hình chóp?
SB
SO
BC
SD
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