SOLUTION: Complex Number: Solve the equation 2x^2 + 2 = 0.

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Question 1056393: Complex Number: Solve the equation 2x^2 + 2 = 0.
Answer by ikleyn(53937) About Me  (Show Source):
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Complex Number: Solve the equation 2x^2 + 2 = 0.
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2x^2 + 2 = 0.

It is equivalent to 

2x^2 = -2

which is equivalent to

x^2 = -1,

which has two solution in complex numbers

x = i   and   x = -i.

Answer. the solutions are i and -i.