mo2naubritty mo2naubritty
  • 19-11-2016
  • Mathematics
contestada

the expression 10/(3 + i) is equivalent to:


1) 3 - i
2) (15 + 5i)/4
3) 3 + i
4) 5/4

Respuesta :

Nirina7
Nirina7 Nirina7
  • 22-11-2016
the answer is 2) (15 + 5i)/4

proof
10/(3 + i)=10 (3 - i)/(3 + i) (3 - i)= 5(3 - i) /4
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