spiveydangelus3749 spiveydangelus3749

19-05-2020
Mathematics

contestada

Express the radical using the imaginary unit, i. ± -81 =±

Respuesta :

amna04352 amna04352

19-05-2020

Answer:

+/- 9i

Step-by-step explanation:

+/- sqrt(-81) = +/- sqrt(-1) × sqrt(81)

= +/- 9i

Answer Link

igoroleshko156 igoroleshko156

19-05-2020

Step-by-step explanation:

Step 1: Find the radical

[tex]\pm\sqrt{-81}[/tex]

[tex]\pm(\sqrt{-1} * \sqrt{81})[/tex]

[tex]\pm i*9[/tex]

[tex]\pm 9i[/tex]

Answer: [tex]\pm 9i[/tex]

Answer Link

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