Đa x Đa, Đơn x Đa
Quiz
•
Mathematics
•
8th Grade
•
Medium
Ngân Nguyễn
Used 4+ times
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
3x(5x2 - 2x - 1)
15x2 - 6x2 + 3x
15x2 + 6x2 – 3x
-15x3 + 6x2 – 3x
15x3 – 6x2 – 3x
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
25x - 4(3x - 1) + 7(5 - 2x) với x=2,1
15
-15
36,9
-36,9
3.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Gía trị của biểu thức x(2x + 1) - x2(x + 2) + (x3 - x + 3) là
1
2
3
-2
4.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Giá trị của biểu thức: M = x(y - z) + y((z - x) + z(x - y)
0
2xy
2yz
2xy+2yz
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
25x2 + 50x + 25
(5x + 5)2
(5x - 5)2
(25x + 5)2
(25x - 5)2
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
giá trị của x2 - y2 tại x = 87 và y = 13
1000
1200
7400
740
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Cho tứ giác ABCD, có góc A = 50o, góc B = 110o, góc D = góc C. Vậy góc C =?
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