KIỂM TRA 15 PHÚT
Authored by Tình dương
Mathematics
6th - 8th Grade
CCSS covered
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Phân tích đa thức x3 + 12x thành nhân tử ta được:
x2(x + 12)
x(x2 + 12)
x(x2 – 12)
x2(x – 12)
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Phân tích đa thức mx + my + m thành nhân tử ta được:
m(x + y + 1)
m(x + y + m)
m(x + y)
m(x + y – 1)
Tags
CCSS.7.EE.A.1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Đẳng thức nào sau đây là đúng?
y5– y4= y4(y– 1)
y5 – y4 = y3(y2 – 1)
y5 – y4 = y5(1 – y)
y5 – y4 = y4(y + 1)
Tags
CCSS.7.EE.A.1
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Đẳng thức nào sau đây là đúng?
(x – 1)3 + 2(x – 1)2 = (x – 1)2(x + 1)
(x – 1)3 + 2(x – 1) = (x – 1)[(x – 1)2 + 2]
(x – 1)3 + 2(x – 1)2 = (x – 1)[(x – 1)2 + 2x – 2]
(x – 1)3 + 2(x – 1)2 = (x – 1)(x + 3)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Chọn câu sai?
(x – 2)2 – (2 – x)3 = (x – 2)2(x – 1)
(x – 2)2 – (2 – x) = (x – 2)(x – 1)
(x – 2)3 – (2 – x)2 = (x – 2)2(3 – x)
(x – 2)2 + x – 2 = (x – 2)(x – 1)
Tags
CCSS.7.EE.A.1
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Phân tích đa thức 3x(x – 3y) + 9y(3y – x) thành nhân tử ta được:
3(x – 3y)2
(x – 3y)(3x + 9y)
(x – 3y) + (3 – 9y)
(x – 3y) + (3x – 9y)
Tags
CCSS.7.EE.A.1
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cho 3a2(x + 1) – 4bx – 4b = (x + 1)(…).
Điền biểu thức thích hợp vao dấu …
3a2 – b
3a2+ 4b
3a2 – 4b
3a2 + b
Tags
CCSS.HSA.APR.C.4
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