erika1087393 erika1087393
  • 22-04-2021
  • Mathematics
contestada

PLEASE LOOK AT THE PICTURE I REALLY NEED HELP!!

PLEASE LOOK AT THE PICTURE I REALLY NEED HELP class=
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Respuesta :

gayanepoghosyan
gayanepoghosyan gayanepoghosyan
  • 22-04-2021

Answer:

B

Step-by-step explanation:

in complex numbers i²=-1

[tex]\frac{7-i}{3-i}= \frac{(7-i)(3+i)}{(3-i)(3+i)}= \frac{21+3i+7i+i^{2} }{3^{2} -i^{2} }= \frac{21+10i-1}{9+1}== \frac{20+10i}{10}=2+i[/tex]

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