(x^2/1000-x)=4

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Solution for (x^2/1000-x)=4 equation: 


x in (-oo:+oo)

(x^2)/1000-x = 4 // - 4

(x^2)/1000-x-4 = 0

1/1000*x^2-x-4 = 0

DELTA = (-1)^2-(-4*1/1000*4)

DELTA = 127/125

DELTA > 0

x = ((127/125)^(1/2)+1)/(1/1000*2) or x = (1-(127/125)^(1/2))/(1/1000*2)

x = 500*((127/125)^(1/2)+1) or x = 500*(1-(127/125)^(1/2))

x in { 500*(1-(127/125)^(1/2)), 500*((127/125)^(1/2)+1) }

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