Những hằng đẳng thức đáng nhớ

Những hằng đẳng thức đáng nhớ

7th - 9th Grade

36 Qs

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Những hằng đẳng thức đáng nhớ

Những hằng đẳng thức đáng nhớ

Assessment

Quiz

Mathematics

7th - 9th Grade

Medium

Created by

Hoang Binh

Used 1+ times

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36 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 x2y2=?x^2-y^2=?  

 (x+y)(xy)\left(x+y\right)\left(x-y\right)  

 (2xy)(2x+y)\left(2x-y\right)\left(2x+y\right)  

 (2y+x)(2yx)\left(2y+x\right)\left(2y-x\right)  

 x22xy+y2x^2-2xy+y^2  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 x21=?x^2-1=?  

 x1x-1  

 x+1x+1  

 (x+1)(x1)\left(x+1\right)\left(x-1\right)  

 x22x+1x^2-2x+1  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (x+3)2=?\left(x+3\right)^2=?  

 x2+6x+9x^2+6x+9  

 x26x+9x^2-6x+9  

 x2+2x+9x^2+2x+9  

 x22x+9x^2-2x+9  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (x2)2=?\left(x-2\right)^2=?  

 x24x+4x^2-4x+4  

 x2+4x+4x^2+4x+4  

 x22x+4x^2-2x+4  

 x2+2x+4x^2+2x+4  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (xy)2=?\left(x-y\right)^2=?  

 x22xy+y2x^2-2xy+y^2  

 (x+y)(xy)\left(x+y\right)\left(x-y\right)  

 x2+2xy+y2x^2+2xy+y^2  

 x33x2y+3xy2y3x^3-3x^2y+3xy^2-y^3  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (2x+1)2=?\left(2x+1\right)^2=?  

 4x2+4x+14x^2+4x+1  

 2x2+4x+12x^2+4x+1  

 2x2+2x+12x^2+2x+1  

 4x2+4x+44x^2+4x+4  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (1y)2=?\left(1-y\right)^2=?  

 12y+y21-2y+y^2  

 1+2y+y21+2y+y^2  

 1y21-y^2  

 (1+y)(1y)\left(1+y\right)\left(1-y\right)  

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