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4 years ago

Evaluate the following. let me know if its "Not a real number" -√81 √-16

Mathematics

2 answers:

mr Goodwill [35]4 years ago

7 0

Answer:

Step-by-step explanation:

(1)

-√81 = -9 (although you could argue that it's ± 9, since 81 has two square roots: 9 and -9). Real number.

(2) √(-16) is imaginary, and the value is i·4 (or -i·4). Not a real number.

notsponge [240]4 years ago

5 0

Answer:

-9, Undefined

Step-by-step explanation:

-√81

-√9^2

-9

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Answer

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