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abs(1*x^2+2*x+5) = 1*x^2+1*x+1
e = 3/4
((x-1)^2+3)/2 > (x^2)/5
(x-1)^2+3/2 > (x^2)/5
x^4-3*x^3-8*x^2+12*x+16;x-2
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