Raphianna
Raphianna Raphianna
  • 18-10-2018
  • Mathematics
contestada

Simplify the expression

[tex]\frac{-5+i}{2i}[/tex]

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Ammimochi
Ammimochi Ammimochi
  • 18-10-2018

Multiply by the conjugate and simplify.

1/2 + 5i/2

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gmany
gmany gmany
  • 18-10-2018

[tex]\text{We know}\ i=\sqrt{-1}\to i^2=-1[/tex]

[tex]\dfrac{-5+i}{2i}=\dfrac{-5+i}{2i}\cdot\dfrac{i}{i}=\dfrac{-5i+i^2}{2i^2}=\dfrac{-5i+(-1)}{2(-1)}=\dfrac{-5i-1}{-2}\\\\=\dfrac{-5i}{-2}+\dfrac{-1}{-2}=\boxed{\dfrac{1}{2}+\dfrac{5}{2}i}[/tex]

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