(1/2)x^2-2x-5

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Solution for (1/2)x^2-2x-5 equation: 


x in (-oo:+oo)

(1/2)*x^2-(2*x)-5 = 0

(1/2)*x^2-2*x-5 = 0

1/2*x^2-2*x-5 = 0

DELTA = (-2)^2-(-5*1/2*4)

DELTA = 14

DELTA > 0

x = (14^(1/2)+2)/(1/2*2) or x = (2-14^(1/2))/(1/2*2)

x = 14^(1/2)+2 or x = 2-14^(1/2)

x in { 2-14^(1/2), 14^(1/2)+2 }

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