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a=1,b=-2,c=3
x=-b+ b-4ac





2a
x=2+ -2-4x1x3
2a
x=-2+ 4-12
2a
x=2+ -8
2
x=2+2 2i
2




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2+2 2i=1+ 2i
2
2-2 2i=1- 2i
2




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