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miskamm [114]
3 years ago
14

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

Mathematics
2 answers:
Alexus [3.1K]3 years ago
4 0

Step-by-step explanation:

<u>Step 1:  Find the radical</u>

<u />\pm\sqrt{-81}

\pm(\sqrt{-1} * \sqrt{81})

\pm i*9

\pm 9i

Answer:  \pm 9i

Tresset [83]3 years ago
3 0

Answer:

+/- 9i

Step-by-step explanation:

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

= +/- 9i

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