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Find the roots of the function. ƒ(x) = x^2 + 81 x = -81i, 81i x = -81, 81 x = -9, 9 x = -9i, 9i

Find the roots of the function. ƒ(x) = x^2 + 81 x = -81i, 81i x = -81, 81 x = -9, 9 x = -9i, 9i
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3 votes
Find the roots of the function.

ƒ(x) = x^2 + 81

x = -81i, 81i
x = -81, 81
x = -9, 9
x = -9i, 9i

User Ben Mosher
by
7.7k points

2 Answers

4 votes

Answer:

For quick answer its -9i,9i

User Nightograph
by
8.1k points
4 votes
the answer is -9i , 9i
x^2+81=0
x^2=-81
x=√-81
=9i,-9i
User Mcha
by
8.1k points
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