Sčítání a odčítání výrazů 2

Sčítání a odčítání výrazů 2

8th Grade

10 Qs

quiz-placeholder

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Sčítání a odčítání výrazů 2

Sčítání a odčítání výrazů 2

Assessment

Quiz

Mathematics

8th Grade

Medium

Created by

Hana Hedbávná

Used 2+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

2x-4x+6x-11x=

7x

-7x

-8x

jiný výsledek

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 2a2(3a2+1)1=2a^2-\left(3a^2+1\right)-1=  

 a21-a^2-1  

 5a225a^2-2  

 a22-a^2-2  

 a2-a^2  

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 5x3x2+x=5-x^3-x^2+x=  

 x3x2+x+5-x^3-x^2+x+5  

 x3x2x5-x^3-x^2-x-5  

 x4+5-x^4+5  

jiný výsledek

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pro který výraz platí, že po dosazení nuly za proměnnou je jeho hodnota rovna číslu 1?

(2x1)+x\left(2x-1\right)+x

x25xx3x^2-5x-x^3

5x(x1)-5x-\left(x-1\right)

x286x2+7x^2-8-6x^2+7

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 3x(6x)(+4x)=3x-\left(-6x\right)-\left(+4x\right)=  

x

-7x

13x

5x

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 x+9y(3yx)=x+9y-\left(3y-x\right)=  

11y

2x+6y

6y

2x-6y

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 4m3n+(5m+5n)=4m-3n+\left(-5m+5n\right)=  

-m+8n

m+2n

9m-2n

-m+2n

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