isabellecowan isabellecowan
  • 17-11-2020
  • Mathematics
contestada

Write the expression in the form a+bi.
√ -4 - √144

Respuesta :

Hrishii
Hrishii Hrishii
  • 17-11-2020

Answer:

-12 + 2i

Step-by-step explanation:

[tex] \sqrt{ - 4} - \sqrt{144} \\ \\ = \sqrt{ - 1 \times 4} - \sqrt{144} \\ \\ = \sqrt{ - 1} \times \sqrt{4} - \sqrt{144} \\ \\ = i \times 2 - 12 \\ \\ = - 12 + 2i \\ \implies \: a + bi[/tex]

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