KIỂM TRA 15 PHÚT

KIỂM TRA 15 PHÚT

6th - 8th Grade

10 Qs

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KIỂM TRA 15 PHÚT

KIỂM TRA 15 PHÚT

Assessment

Quiz

Mathematics

6th - 8th Grade

Hard

Created by

Tình dương

Used 1+ times

FREE Resource

10 questions

Show all answers

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)

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)

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)

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)

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

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