ΤΑΥΤΟΤΗΤΕΣ

ΤΑΥΤΟΤΗΤΕΣ

9th Grade

8 Qs

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ΤΑΥΤΟΤΗΤΕΣ

ΤΑΥΤΟΤΗΤΕΣ

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Medium

Created by

Efi Xouveroudi

Used 15+ times

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 (x+y)2=\left(x+y\right)^2=  

 x2+y2x^2+y^2  

 x2+xyy2x^2+xy-y^2  

 x+2xy+yx+2xy+y  

 x2+2xy+y2x^2+2xy+y^2  

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 (a1)(a+1)=\left(a-1\right)\left(a+1\right)=  

 a2+1a^2+1  

 a21a^2-1  

 a22a+1a^2-2a+1  

 (a1)2\left(a-1\right)^2  

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 (32b)2=\left(3-2b\right)^2=  

 34b23-4b^2  

 94b29-4b^2  

 96b+4b29-6b+4b^2  

 912b+4b29-12b+4b^2  

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 (a22)(a2+2)\left(a^2-2\right)\left(a^2+2\right)  

 (a24)\left(a^2-4\right)  

 a4 4a^{4\ }-4  

 a22a+4a^2-2a+4  

 a2+2a4a^2+2a-4  

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 (x1)3=\left(x-1\right)^3=  

 x21x^2-1  

 x31x^3-1  

 x33x2+3x1x^3-3x^2+3x-1  

 x3+3x2+3x+1x^3+3x^2+3x+1  

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 (5k2m)2=\left(5k-2m\right)^2=  

 25k10km+4m25k-10km+4m  

 25k220km+4m225k^2-20km+4m^2  

 25k210km+4m225k^2-10km+4m^2  

 25k24m225k^2-4m^2  

7.

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

 (a2b)2=\left(a-2b\right)^2=  

 a24b2a^2-4b^2  

 a24ab+4b2a^2-4ab+4b^2  

8.

MULTIPLE CHOICE QUESTION

45 sec • Ungraded

 (3x)(3+x)\left(3-x\right)\left(3+x\right)  

 9x29-x^2  

 3x23-x^2  

 (x3)2\left(x-3\right)^2