Mathematics

10th

grade

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Numere complexe: operații

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16 questions

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  • 1. Multiple Choice
    2 minutes
    1 pt

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

     29\sqrt{29}  

     2121  

     52i5-2i  

    29

  • 2. Multiple Choice
    1 minute
    1 pt

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

    34

     25+9i25+9i  

     2+6i2+6i  

     16+30i16+30i  

  • 3. Multiple Choice
    45 seconds
    1 pt

    Aflați:  4+3i\left|4+3i\right| 

    25

    5

    17

     17\sqrt{17}  

    7

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