Respuesta :

Solve out
x^2 + 64 = 0
x^2 = -64 ( we are going to use imaginary numbers to solve)
x = [tex]i \sqrt{64} [/tex]
x = 8i, -8i final answers
8i.

This boils down to what is the square root of -64. Negative numbers can't be squares so an imaginary number is part of your answer.

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