TOÁN 08  (7 Hằng đẳng thức)

TOÁN 08 (7 Hằng đẳng thức)

8th - 12th Grade

10 Qs

quiz-placeholder

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TOÁN 08  (7 Hằng đẳng thức)

TOÁN 08 (7 Hằng đẳng thức)

Assessment

Quiz

Mathematics

8th - 12th Grade

Hard

Created by

Johnson _vs

Used 30+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Khai triển (3x-4y)2 ta được

9x2-12x+16y2

9x2-24x+16y2

9x2-6x+16y2

-9x2+12x-16y2

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Viết biểu thức 25x2-20xy+4y2 dưới dạng bình phương của một hiệu

(5x-4y)2

(5x+2y)2

(2x-5y)2

(2y-5x)2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Tìm x, biết (2x-10)2=0

x=5

x=-2

x=-5

x=2

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Tìm x, biết: (x-2)2-4=0

x=4 hoặc x=0

x=4 và x=0

x=2 hoặc x=0

x=2 và x=0

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Giá trị của biểu thức: (2+x)(x-2) - (x2-2x+4)

2x

-2x2+2x+8

-2x-8

-2x

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Tìm x, biết: x(5-2x)-2x(1-x)=15

x=5

x=-5

x=3

x=-3

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

khai triển x3-8 ta được:

(x-2)(x2+4x+4)

(x+2)(x2+2x+4)

(x+2)(x2-2x+4)

(x-2)(x2+2x+4)

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