Sčítání (odčítání) výrazů 2

Sčítání (odčítání) výrazů 2

8th Grade

10 Qs

quiz-placeholder

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Sčítání (odčítání) výrazů 2

Sčítání (odčítání) výrazů 2

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Hard

Created by

Jan Kučera

Used 11+ times

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10 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Zjednodušte výrazy


Začněte od nejvyšší mocniny.
 2+4a23a21+3a+a32a=2+4a^2-3a^2-1+3a+a^3-2a=  

 a3+a2+a+1a^3+a^2+a+1  

 3a3+7a233a^3+7a^2-3  

 a3+7a2+5a1a^3+7a^2+5a-1  

 2a3a2a12a^3-a^2-a-1  

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 5t+11t2+4t8+3t2=-5t+11-t^2+4t-8+3t^2=  

 2t2t+32t^2-t+3  

 4t29t34t^2-9t-3  

 2t2+3t6-2t^2+3t-6  

 t2+12t22t^2+12t-22  

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 4x22x3+x25x3x2+4x32=4x^2-2x^3+x^2-5x^3-x^2+4x^3-2=  

 3x3+4x22-3x^3+4x^2-2  

 6x32x2+2x26x^3-2x^2+2x-2  

 3x34x23x^3-4x-2  

 4x2+2x24x^2+2x-2  

4.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 2ab3b+4ab2b2+5b+3b2+a=2ab-3b+4ab-2b^2+5b+3b^2+a=  

 b2+2b+6ab+ab^2+2b+6ab+a  

 6b2+b4ab+a6b^2+b-4ab+a  

 3b22b6aba3b^2-2b-6ab-a  

 2b2+b+2aba2b^2+b+2ab-a  

5.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 (6x)+2x+(3x)+(+10x)=\left(-6x\right)+2x+\left(-3x\right)+\left(+10x\right)=  

 15x15x  

 3x-3x  

 3x3x  

 11x11x  

6.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 (+a)+(7a)+(4a)+(+3a)=\left(+a\right)+\left(-7a\right)+\left(-4a\right)+\left(+3a\right)=  

 7a-7a  

 7a7a  

 5a5a  

 15a15a  

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 2a(ab+c)=2a-\left(a-b+c\right)=  

 3ab+c3a-b+c  

 ab+ca-b+c  

 a+b+ca+b+c  

 a+bca+b-c  

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