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09-12-2019
Mathematics

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Simplify suqrt. -81

A) -9i
B) 9i
C) -9
D) 9

Simplify suqrt 81 A 9i B 9i C 9 D 9 class=

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crisviz420 crisviz420

09-12-2019

Answer:

9i

Step-by-step explanation:

sqrt(-81) can be expanded to sqrt(-1) × sqrt(81).

sqrt(-1) = 'i' and the sqrt(81) is 9.

sqrt(-81) = 9i

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