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radicali

Authored by Dana Barboianu

Mathematics

2nd - 3rd Grade

Used 3+ times

radicali
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Numerele pătrate perfecte mai mici decât 90 sunt:

1, 4,8, 9, 15, 64, 81, 90

4,9,16,25,36,49,64, 81

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Rezultatul calculului  62+82\sqrt{6^2+8^2}  este

14

10

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Dintre numerele  23 2\sqrt{3}\   și  323\sqrt{2}  mai mare este

 323\sqrt{2}  

 232\sqrt{3}  

sunt egale

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fie numerele a= 96-\sqrt{96}  și b= 215-2\sqrt{15}  mai mic este

 96-\sqrt{96}  

 215-2\sqrt{15}  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Semnul numa˘rului real x=(13)2+(3+1)2(31)2((3)2este)Semnul\ numărului\ real\ x=\sqrt{\left(1-\sqrt{3}\right)^2}+\sqrt{\left(\sqrt{3}+1\right)^2}-\sqrt{\left(-\sqrt{3}-1\right)^2}-\left(\left(\sqrt{3}\right)^2este\right)  

negativ

pozitiv

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Media aritmetica˘ a numerelor x=3+28 și y=542 este un numa˘rMedia\ aritmetică\ a\ numerelor\ x=3+2\sqrt{8\ }și\ y=5-4\sqrt{2}\ este\ un\ număr  

natural

irațional

rațional

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Duoă raționalizarea numitorului , rezultatul sumei  112+13\frac{1}{\sqrt{12}}+\frac{1}{\sqrt{3}}  este

 33\frac{\sqrt{3}}{3}  

 3\sqrt{3}  

 36\frac{\sqrt{3}}{6}  

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