BÀI 2 LỚP 8

BÀI 2 LỚP 8

8th Grade

10 Qs

quiz-placeholder

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BÀI 2 LỚP 8

BÀI 2 LỚP 8

Assessment

Quiz

History, Mathematics

8th Grade

Medium

Created by

C2 Sam

Used 3+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Bài 1 : Tính.

         a) 3(2x - 3)                

Đáp án khác

6x - 9

6x + 9

6x - 3

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

     Bài 1 : (1 điểm) Tính.

    b) 3(3x - 8) + 6x - 2  

15x - 22 

15x - 26

15x + 26

Đáp án khác

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Bài 1 : (1 điểm) Tính.

c) (x - 3)(x + 3) - (x - 5)

x - 5

Đáp án khác

10x-34

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Bài 2 : (1 điểm) Tìm x, biết.

         a) x(x - 3) + 2(x - 3) = 0

x=3 hoặc x=-2

x=3 và x=-2

x=3

x=-2

5.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Bài 2 : (1điểm) Tìm x, biết

         d) (2x - 3)(3x - 4) = 0

x=1

Đáp án khác

x=4/3 và x=3/2

x=4/3 hoặc x=3/2

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Bài 3 : (1 điểm) Rút gon rồi tình giá trị biểu thức A tại x = -1.

          A = (x + 1)(x2 - x + 1) - (x - 1)(x2 + x + 1) + x

A = 0

A = 2

Đáp án khác

A = 1

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Bài 5 : Tìm giá trị nhỏ nhất của biểu thức :

            P = x2 - 6x -11

2

-2

-20

19

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