SOLUTION: solve all real and imaginary solution z^4-16=0

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Question 720674: solve all real and imaginary solution
z^4-16=0
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
z^4-16=0
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z%5E4+=+16
z%5E2+=+4
z = -2, +2
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z%5E2+=+-4
z = -2i, +2i