marlyman2 marlyman2
  • 11-01-2021
  • Mathematics
contestada

Simply please will give brainlist to first right answer

Simply please will give brainlist to first right answer class=

Respuesta :

CSMedrano
CSMedrano CSMedrano
  • 11-01-2021

Answer:

12-14i

Step-by-step explanation:

[tex](-1-3i)(3+5i)\\\\=-1(3)-1(5i)-3i(3)-3i(5i)\\\\=-3-5i-9i-15i^2\\\\= -3-14i-15i^2\\\\[/tex]

here we know that i^2=-1

[tex]=-3-14i-15(-1)\\\\=-3-14i+15\\\\=12-14i[/tex]

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