Calcul algebric Test

Calcul algebric Test

8th Grade

19 Qs

quiz-placeholder

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Calcul algebric Test

Calcul algebric Test

Assessment

Quiz

Mathematics

8th Grade

Hard

Created by

PETRIUC IRINA-NICULINA

Used 4+ times

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19 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Dacă  a2b2=7 a^2-b^2=7\   și  a+b=7a+b=7 , atunci  aba-b  este egal cu ..... .

1

49

7

alt răspuns

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Rezultatul calculului  2(x1)2x+32\left(x-1\right)-2x+3  este egal cu ..... .

2

1

4x+1

-2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Reducând termenii asemenea 
2x + 3 + 5x - (-7) - 7x
se obține ..... .

14x + 10

-4

10

alt răspuns

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 a=233a=2\sqrt{3}-3  ;  b=12+3b=\sqrt{12}+3 
Produsul numerelor a și b este egal cu ..... .

alt răspuns

12

9

3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 n=(35)2n=\left(\sqrt{3}-\sqrt{5}\right)^2 .
 Rădăcina pătrată a numărului n este egală cu ..... .

 5\sqrt{5}  

 3\sqrt{3}  

 35\sqrt{3}-\sqrt{5}  

 53\sqrt{5}-\sqrt{3}  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (33)(3+3)=..... .\left(3-\sqrt{3}\right)\left(3+\sqrt{3}\right)=.....\ .  

9

6

3

0

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Dacă  a+b=75a+b=\sqrt{75}  atunci  a3+b3\frac{a}{\sqrt{3}}+\frac{b}{\sqrt{3}}  este egal cu ..... .

 55  

 33  

 3\sqrt{3}  

 5\sqrt{5}  

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