2*b-c=240
5*b-2*c=726
b=246 and c=252
long division -> (x-2)(x*x+4x+8.5)=0
x=2, x=-2+3i/sqrt(2),x=-2-3i/sqrt(2).
2*b-c=240
5*b-2*c=726
b=246 and c=252
long division -> (x-2)(x*x+4x+8.5)=0
x=2, x=-2+3i/sqrt(2),x=-2-3i/sqrt(2).
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