SOLUTION: the equation {{{x^2-4x+8=0}}} x=__ Plus __ and minus__.

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Question 16440: the equation x%5E2-4x%2B8=0 x=__ Plus __ and minus__.
Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2-4x%2B8=0 x=__ Plus __ and minus__.
using the formula x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ we get
x+=+%28-%28-4%29+%2B-+sqrt%28%28-4%29%5E2-4%2A1%2A8%29%29%2F%282%2A1%29+
x+=+%284%2B-+sqrt%28-16%29%29%2F2
(2+2i) OR ( 2-2i )
+(2+2i) OR - (2i-2)