9/4y^2-3/5y

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Solution for 9/4y^2-3/5y equation: 


y in (-oo:+oo)

(9/4)*y^2-((3/5)*y) = 0

(9/4)*y^2+(-3/5)*y = 0

9/4*y^2-3/5*y = 0

DELTA = (-3/5)^2-(0*9/4*4)

DELTA = 9/25

DELTA > 0

y = ((9/25)^(1/2)+3/5)/(2*9/4) or y = (3/5-(9/25)^(1/2))/(2*9/4)

y = 4/15 or y = 0

y in { 0, 4/15 }

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