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

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Solution for (1/2)x^2-2x=0 equation: 


x in (-oo:+oo)

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

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

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

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

DELTA = 4

DELTA > 0

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

x = 4 or x = 0

x in { 0, 4 }

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