1/2y^2-1/2y-55=0

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Solution for 1/2y^2-1/2y-55=0 equation: 


y in (-oo:+oo)

(1/2)*y^2-((1/2)*y)-55 = 0

(1/2)*y^2+(-1/2)*y-55 = 0

1/2*y^2-1/2*y-55 = 0

DELTA = (-1/2)^2-(-55*1/2*4)

DELTA = 441/4

DELTA > 0

y = ((441/4)^(1/2)+1/2)/(1/2*2) or y = (1/2-(441/4)^(1/2))/(1/2*2)

y = 11 or y = -10

y in { -10, 11 }

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