Puteri și radicali

Puteri și radicali

10th Grade

11 Qs

quiz-placeholder

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Puteri și radicali

Puteri și radicali

Assessment

Quiz

Mathematics

10th Grade

Medium

Created by

Monica Dumitrache

Used 14+ times

FREE Resource

11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 23+3322+32+62:(2,4)1\frac{2^{-3}+3^{-3}}{2^{-2}+3^{-2}+6^{-2}}:\left(2,4\right)^{-1}  


Rezultatul calculului este:

1

2

3

1/2

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Radicalul

 x2+6x+16\sqrt{-x^2+6x+16}  are sens pentru:

 x(,8)(2,)x\in\left(-\infty,-8\right)\cup\left(2,\infty\right)  

 x,28,x\in\lceil-\infty,-2\rceil\cup\lceil8,\infty\rceil  

 x2,8x\in\lceil-2,8\rceil  

 x8,2x\in\lceil-8,2\rceil  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Calculați valoarea expesiei: (-1)3 – (-2)3 + 52 – 72.

83

33

-16

-17

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 169\sqrt{169}  

11

12

13

14

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (15)2\left(\sqrt{15}\right)^2  

13

14

15

16

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Condiția de existență pentru radicalul x4\sqrt{x-4} este:

 x0x\ge0  

radicalul nu există

 x4x\ge4  

 x<4x<4  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Condiția de existență pentru radicalul de mai sus este:

x>5x>5

x5x\ne5

x<5x<5

xR\forall x\in R

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