1/2x^2-2x-4

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Solution for 1/2x^2-2x-4 equation: 


x in (-oo:+oo)

(1/2)*x^2-(2*x)-4 = 0

(1/2)*x^2-2*x-4 = 0

1/2*x^2-2*x-4 = 0

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

DELTA = 12

DELTA > 0

x = (12^(1/2)+2)/(1/2*2) or x = (2-12^(1/2))/(1/2*2)

x = 2*3^(1/2)+2 or x = 2-2*3^(1/2)

x in { 2-2*3^(1/2), 2*3^(1/2)+2 }

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