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Pavel [41]
3 years ago
11

Simplify radical -81

Mathematics
1 answer:
Solnce55 [7]3 years ago
5 0

Step-by-step explanation:

-81

\sqrt{ - 1}  \:  \times  \sqrt{81}

\sqrt{ - 1}  = i

i \times  \sqrt{9 {}^{2} }

i \times 9

9i

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