ria2389
ria2389 ria2389
  • 12-04-2019
  • Mathematics
contestada

Plz help me with this

Plz help me with this class=

Respuesta :

tramserran
tramserran tramserran
  • 14-04-2019

Answer:   [tex]\bold{c)\quad \dfrac{11+7i}{5}}[/tex]

Step-by-step explanation:

[tex]\dfrac{3+i}{2-i}\cdot\dfrac{4+i}{2+i}\\\\\\\text{Multiply using any method:}\\=\dfrac{12+7i+i^2}{4+2i-2i-i^2}\\\\\\\text{Add like terms and replace }i^2\ \text{with -1}\\=\dfrac{12+7i+(-1)}{4-(-1)}\\\\\\=\large\boxed{\dfrac{11+7i}{5}}[/tex]

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