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x^2-((11/12)*x)-(5/4) = 0
x^2+(-11/12)*x-5/4 = 0
x^2-11/12*x-5/4 = 0
DELTA = (-11/12)^2-(-5/4*1*4)
DELTA = 841/144
DELTA > 0
x = ((841/144)^(1/2)+11/12)/(1*2) or x = (11/12-(841/144)^(1/2))/(1*2)
x = 5/3 or x = -3/4
x in { -3/4, 5/3 }
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