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y in (-oo:+oo)
(1-(9*y))*(11-(3*y)) = 5/8 // - 5/8
(1-(9*y))*(11-(3*y))-(5/8) = 0
(1-9*y)*(11-3*y)-5/8 = 0
(8*(1-9*y)*(11-3*y))/8-5/8 = 0
8*(1-9*y)*(11-3*y)-5 = 0
216*y^2-816*y+83 = 0
216*y^2-816*y+83 = 0
216*y^2-816*y+83 = 0
DELTA = (-816)^2-(4*83*216)
DELTA = 594144
DELTA > 0
y = (594144^(1/2)+816)/(2*216) or y = (816-594144^(1/2))/(2*216)
y = (12*4126^(1/2)+816)/432 or y = (816-12*4126^(1/2))/432
(y-((816-12*4126^(1/2))/432))*(y-((12*4126^(1/2)+816)/432)) = 0
((y-((816-12*4126^(1/2))/432))*(y-((12*4126^(1/2)+816)/432)))/8 = 0
((y-((816-12*4126^(1/2))/432))*(y-((12*4126^(1/2)+816)/432)))/8 = 0 // * 8
(y-((816-12*4126^(1/2))/432))*(y-((12*4126^(1/2)+816)/432)) = 0
( y-((12*4126^(1/2)+816)/432) )
y-((12*4126^(1/2)+816)/432) = 0 // + (12*4126^(1/2)+816)/432
y = (12*4126^(1/2)+816)/432
( y-((816-12*4126^(1/2))/432) )
y-((816-12*4126^(1/2))/432) = 0 // + (816-12*4126^(1/2))/432
y = (816-12*4126^(1/2))/432
y in { (12*4126^(1/2)+816)/432, (816-12*4126^(1/2))/432 }
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