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(5/4)*y^2-((625/36)*y)-(275/36) = 0
(5/4)*y^2+(-625/36)*y-275/36 = 0
5/4*y^2-625/36*y-275/36 = 0
DELTA = (-625/36)^2-(-275/36*5/4*4)
DELTA = 440125/1296
DELTA > 0
y = ((440125/1296)^(1/2)+625/36)/(5/4*2) or y = (625/36-(440125/1296)^(1/2))/(5/4*2)
y = 2/5*((440125/1296)^(1/2)+625/36) or y = 2/5*(625/36-(440125/1296)^(1/2))
y in { 2/5*(625/36-(440125/1296)^(1/2)), 2/5*((440125/1296)^(1/2)+625/36) }
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