viguuffcfif viguuffcfif
  • 18-08-2021
  • Mathematics
contestada

Simplify equation 9/-4-7i

Respuesta :

Tasyha
Tasyha Tasyha
  • 22-08-2021

Answer:

[tex] - \frac{36}{65} + \frac{63}{65} i[/tex]

Step-by-step explanation:

[tex] \frac{9}{ - 4 - 7i} [/tex]

➡️ [tex] \frac{9( - 4 + 7i)}{( - 4 - 7i) \times ( - 4 + 7i)} [/tex]

➡️ [tex] \frac{ - 36 + 63i}{16 - 49 {i}^{2} } [/tex]

➡️ [tex] \frac{ - 36 + 63i}{16 - 49 \times ( - 1) } [/tex]

➡️ [tex] \frac{ - 36 + 63i}{16 + 49} [/tex]

➡️ [tex] \frac{ - 36 + 63i}{65} [/tex]

➡️ [tex] - \frac{36}{65} + \frac{63}{65} i[/tex] ✅

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