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y in (-oo:+oo)
y*((4*y-8)/3) = 6 // - 6
y*((4*y-8)/3)-6 = 0
(y*(4*y-8))/3-6 = 0
(y*(4*y-8))/3+(-6*3)/3 = 0
y*(4*y-8)-6*3 = 0
4*y^2-8*y-18 = 0
4*y^2-8*y-18 = 0
2*(2*y^2-4*y-9) = 0
2*y^2-4*y-9 = 0
DELTA = (-4)^2-(-9*2*4)
DELTA = 88
DELTA > 0
y = (88^(1/2)+4)/(2*2) or y = (4-88^(1/2))/(2*2)
y = (2*22^(1/2)+4)/4 or y = (4-2*22^(1/2))/4
2*(y-((4-2*22^(1/2))/4))*(y-((2*22^(1/2)+4)/4)) = 0
(2*(y-((4-2*22^(1/2))/4))*(y-((2*22^(1/2)+4)/4)))/3 = 0
(2*(y-((4-2*22^(1/2))/4))*(y-((2*22^(1/2)+4)/4)))/3 = 0 // * 3
2*(y-((4-2*22^(1/2))/4))*(y-((2*22^(1/2)+4)/4)) = 0
( y-((2*22^(1/2)+4)/4) )
y-((2*22^(1/2)+4)/4) = 0 // + (2*22^(1/2)+4)/4
y = (2*22^(1/2)+4)/4
( y-((4-2*22^(1/2))/4) )
y-((4-2*22^(1/2))/4) = 0 // + (4-2*22^(1/2))/4
y = (4-2*22^(1/2))/4
y in { (2*22^(1/2)+4)/4, (4-2*22^(1/2))/4 }
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