y^2+4y=(9/2)

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Solution for y^2+4y=(9/2) equation: 


y in (-oo:+oo)

y^2+4*y = 9/2 // - 9/2

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

y^2+4*y-9/2 = 0

y^2+4*y-9/2 = 0

DELTA = 4^2-(-9/2*1*4)

DELTA = 34

DELTA > 0

y = (34^(1/2)-4)/(1*2) or y = (-34^(1/2)-4)/(1*2)

y = (34^(1/2)-4)/2 or y = (-(34^(1/2)+4))/2

y in { (-(34^(1/2)+4))/2, (34^(1/2)-4)/2 }

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