0=x^2-4/-2x

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Solution for 0=x^2-4/-2x equation: 


x in (-oo:+oo)

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

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

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

-x^2-2*x = 0

DELTA = (-2)^2-(-1*0*4)

DELTA = 4

DELTA > 0

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

x = -2 or x = 0

x in { -2, 0 }

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