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6*x^2-((7/4)*x) = x-(1/4) // - x-(1/4)
6*x^2-((7/4)*x)-x+1/4 = 0
6*x^2+(-7/4)*x-x+1/4 = 0
6*x^2-11/4*x+1/4 = 0
DELTA = (-11/4)^2-(1/4*4*6)
DELTA = 25/16
DELTA > 0
x = ((25/16)^(1/2)+11/4)/(2*6) or x = (11/4-(25/16)^(1/2))/(2*6)
x = 1/3 or x = 1/8
x in { 1/8, 1/3 }
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