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2*x-(((2*x)/4)*x)-((1/4)*x)+1+1 = 0
(-1/2)*x^2+2*x+(-1/4)*x+1+1 = 0
7/4*x-1/2*x^2+2 = 0
DELTA = (7/4)^2-(-1/2*2*4)
DELTA = 113/16
DELTA > 0
x = ((113/16)^(1/2)-7/4)/(-1/2*2) or x = (-(113/16)^(1/2)-7/4)/(-1/2*2)
x = 7/4-(113/16)^(1/2) or x = (113/16)^(1/2)+7/4
x in { 7/4-(113/16)^(1/2), (113/16)^(1/2)+7/4 }
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