BÀI 9

BÀI 9

8th Grade

40 Qs

quiz-placeholder

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BÀI 9

BÀI 9

Assessment

Quiz

Mathematics

8th Grade

Hard

Created by

newsky toan8

Used 1+ times

FREE Resource

40 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Chọn câu trả lời đúng nhất: x^2y^2z+xy^2z^2+x^2yz^2+x^2yz^2

A. x(xy^2z + y^2z^2 + xyz^2)

B. y(x^2yz + xyz^2 + x^2z^2)

C. z(x^2y^2 + xy^2z + x^2yz)

D. xyz(xy + yz + xz)

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cho 4a^2(x + 1)−7bx−7b =(x + 1)(...). Biểu thức thích hợp vào dấu ... là

A. 4a^2−b

B. 4a^2+7b

C. 4a^2−7b

D. 4a^2+b

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Phân tích đa thức thành nhân tử: x^2+6x+9

A. (x+3)(x−3)

B. (x−1)(x+9)

C. (x+3)^2

D. (x+6)(x−3)

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kết quả phân tích đa thức x^2−xy+x−y thành nhân tử là

A. (x+1)(x−y)

B. (x−y)(x−1)

C. (x−y)(x+y)

D. x(x−y)

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Chọn câu sai.

A. (x−1)^3+2(x−1)^2=(x−1)^2(x+1)

B. (x−1)^3+2(x−1)=(x−1)[(x−1)^2+2]

C. (x−1)^3+2(x−1)^2=(x−1)[(x−1)^2+2x−2]

D. (x−1)^3+2(x−1)^2=(x−1)(x+3)

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Nhân tử chung của biểu thức 30(4−2x)^2+3x−6 có thể là

A. x + 2

B. 3(x – 2)

C. (x−2)^2

D. (x+2)^2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Phân tích đa thức x^2−2xy+y^2−81 thành nhân tử:

A. (x−y−3)(x−y + 3)

B. (x−y−9)(x−y + 9)

C. (x+y−3)(x+y + 3)

D. (x+y−9)(x+y−9)

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