operatii cu numere reale reprezentate prin litere

operatii cu numere reale reprezentate prin litere

8th - 12th Grade

18 Qs

quiz-placeholder

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operatii cu numere reale reprezentate prin litere

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Assessment

Quiz

Mathematics

8th - 12th Grade

Hard

Created by

OANA-MADALINA CIUDIN

Used 6+ times

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Partea numerică a epresiei 35a3b2c3\sqrt{5}^{ }a^3b^2c este

3

 a3b2ca^3b^2c  

 5\sqrt{5}  

 353\sqrt{5}  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Rezultatul  calculului 4x3x+5x este:Rezultatul\ \ calculului\ 4x-3x+5x\ este:  

12x

9x

6x

6

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 Rezultatul  calculului 7x9x211x+12x2+4x este:Rezultatul\ \ calculului\ 7x-9x^2-11x+12x^2+4x\ este:  

 3x23x^2  

3x

 3x2-3x^2  

-3x

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 Rezultatul  calculului (x3)7x4 este:Rezultatul\ \ calculului\ \left(-x^3\right)\cdot7x^4\ este:  

 7x12-7x^{12}  

 7x127x^{12}  

 7x7-7x^7  

 8x4-8x^4  

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 Rezultatul  calculului (5x)35x este:Rezultatul\ \ calculului\ \left(-\sqrt{5}x\right)\cdot3\sqrt{5}x\ este:  

 325x23\sqrt{25}x^2  

 15x2-15x^2  

 15x215x^2  

 45x-4\sqrt{5}x  

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 Rezultatul  calculului x45x34x6(3x) este:Rezultatul\ \ calculului\ x^4\cdot5x^3-4x^6\cdot\left(-3x\right)\ este:  

 17x7-17x^7  

 5x75x^7  

 5x7-5x^7  

 17x717x^7  

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Rezultatul calculului 4x(x-5) este:

4x220x4x^2-20x

5x2+20x-5x^2+20x

4x25x4x^2-5x

16x216x^2

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