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y = 2*x-1*x^2+3;-1;2;3
-((2^2-(-1*3*4))/(-1*4))
-(2/(-1*2))
0*2-(1*0^2)+3
(3/3.91)*x-((3/6.26)*y)-(22.64*(3/3.91));(2.5/3.91)*x-((5.5/6.26)*y)-(22.64*(2.5/3.91))
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