Seudónimo Seudónimo

29-04-2019
Mathematics

contestada

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

Respuesta :

diytechowto diytechowto

29-04-2019

Answer:

-9, Undefined

Step-by-step explanation:

-√81

-√9^2

-9

Answer Link

altavistard altavistard

29-04-2019

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.

Answer Link

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