Operații cu numere reale reprezentate prin litere

Operații cu numere reale reprezentate prin litere

5th - 8th Grade

16 Qs

quiz-placeholder

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Operații cu numere reale reprezentate prin litere

Operații cu numere reale reprezentate prin litere

Assessment

Quiz

Mathematics

5th - 8th Grade

Hard

Created by

GEANINA DUMITRAȘC

Used 9+ times

FREE Resource

16 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

2x - 3y - (4x + 5y)

2x +2y-2x\ +2y

2x 8y-2x\ -8y

6x + 2y6x\ +\ 2y

6x 8y6x\ -\ 8y

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 3(3x23y +33)22(32x32y52)\sqrt{3}\left(\sqrt{3}x-2\sqrt{3}y\ +3\sqrt{3}\right)-2\sqrt{2}\left(3\sqrt{2}x-3\sqrt{2}y-5\sqrt{2}\right)  

9x - 18y + 11

-9x -18y - 11

-9x + 6y + 29

9x + 6y +29

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

35x - 5[4xy - 5x - 3(xy - 4x)]

-5xy

18x - 35xy

-5xy + 18x

18x + 5xy

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(x - 5)(x + 2)

x2 3x 10x^2\ -3x\ -\ 10

x2 7x 10x^2\ -7x\ -\ 10

x2 10x^2\ \ -\ 10

x2 + 10x^2\ +\ 10

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 6x + [2x2(3x + 5)3x2(2x  4)]:( 2x)6x\ +\ \left[2x^2\left(3x\ +\ 5\right)-3x^2\left(2x\ -\ 4\right)\right]:\left(-\ 2x\right)  

7x

- 5x

17x

-5x + 1

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 ( 2x)5:(2x)3(2x)2\left(-\ 2x\right)^5:\left(-2x\right)^3\cdot\left(2x\right)^2  

 16x4 -16x^4\   

 2x4-2x^4  

 16x416x^4  

 (2x)6\left(-2x\right)^6  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 2(5x23)3(x22)2\left(5x^2-3\right)-3\left(x^2-2\right)  

 7x27x^2  

 7x2127x^2-12  

 13x213x^2  

 7x267x^2-6  

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