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Mathematics
Jordan
9 November, 12:56
Evaluate the following.
let me know if its "Not a real number"
-√81
√-16
+5
Answers (
2
)
Dale
9 November, 16:23
0
-9, Undefined
Step-by-step explanation:
-√81
-√9^2
-9
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Tucker Byrd
9 November, 16:24
0
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.
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