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(3/4)*x^2-(2*x)+1/2 = 0
(3/4)*x^2-2*x+1/2 = 0
3/4*x^2-2*x+1/2 = 0
DELTA = (-2)^2-(1/2*3/4*4)
DELTA = 5/2
DELTA > 0
x = ((5/2)^(1/2)+2)/(3/4*2) or x = (2-(5/2)^(1/2))/(3/4*2)
x = 2/3*((5/2)^(1/2)+2) or x = 2/3*(2-(5/2)^(1/2))
x in { 2/3*(2-(5/2)^(1/2)), 2/3*((5/2)^(1/2)+2) }
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