0=2*x-(50/x)

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Solution for 0=2*x-(50/x) equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

0 = 2*x-(50/x) // - 2*x-(50/x)

50/x-(2*x)+0 = 0

50/x-2*x = 0

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

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

x^1*(50*x^0-2*x^2) = 0

x^1

50-2*x^2 = 0

50-2*x^2 = 0

DELTA = 0^2-(-2*4*50)

DELTA = 400

DELTA > 0

x = (400^(1/2)+0)/(-2*2) or x = (0-400^(1/2))/(-2*2)

x = -5 or x = 5

x in { -5, 5} 

x in { -5, 5 }

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