SOLUTION: Find the set of all complex solutions. {{{x3}}}-27=0

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Question 61786: Find the set of all complex solutions.
x3-27=0
Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
Find the set of all complex solutions.
x3-27=0
x^3-27=(x-3)(x^2+3x+9)=0
x=3 is one root.
x^2+3x+9=0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x+=+%28-3+%2B-+sqrt%28+3%5E2-4%2A1%2A9+%29%29%2F%282%2A1%29+
x+=+%28-3+%2B-+sqrt%28+-27+%29%29%2F%282%29+
x+=+%28-3+%2B-+3%2Asqrt%283%29%29%2F%282%29+




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