lanning2000 lanning2000
  • 03-06-2018
  • Mathematics
contestada

simplify: 3i
____
2 + 5i

A.) 6i=15 B.) 3 C.) 11 - 13i D.) -3i
_____ __ _____ ___
29 7 29 2 - 5i

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Аноним Аноним
  • 06-06-2018
We multiply top and bottom of the fraction by the compment of 2 + 5i  which is 2 - 5i

The answer is        6i + 15
                              ---------
                                  29
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