v26pvpnpcr v26pvpnpcr
  • 13-05-2022
  • Mathematics
contestada

(-3+7i)(1-2i) can you help me with the answer to this

Respuesta :

honeybee0535
honeybee0535 honeybee0535
  • 13-05-2022

Answer:

11 + 13i

Step-by-step explanation:

A must know is that

[tex] \sqrt{i} = - 1[/tex]

Complex numbers

1st: foil the equations

[tex] - 3(1 - 2i) + 7i(1 - 2i)[/tex]

[tex] - 3 + 6i + 7i- 14 {i}^{2} [/tex]

2nd Combine like terms and substitute

[tex]i ^{2} for \: - 1[/tex]

[tex] - 3 + 14 + 13i[/tex]

[tex]11 + 13i[/tex]

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