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Numere complexe

Authored by Igor Gutu

Mathematics

11th Grade

Used 183+ times

Numere complexe
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10 questions

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1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 25\sqrt{-25}  

25

5

25i

5i

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 (3i)2\left(3i\right)^2  

9

-9

3

-3

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 (5i)2\left(-5i\right)^2  

5

25

-5

-25

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

dacă  z=5+2iz=5+2i  atunci  z=\overline{z}=  

 29\sqrt{29}  

 5+2i-5+2i  

 52i5-2i  

29

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

dacă  z=5+2iz=5+2i  atunci  zz=z\cdot\overline{z}=  

 29\sqrt{29}  

 2121  

 52i5-2i  

29

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (62i)(6+2i)=\left(6-2i\right)\cdot\left(6+2i\right)=  Calculați

40

36

32

4

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 Calculați   (5+3i)2\left(5+3i\right)^2  

34

 25+9i25+9i  

 2+6i2+6i  

 16+30i16+30i  

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