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

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


D( x )

2*x = 0

2*x = 0

2*x = 0

2*x = 0 // : 2

x = 0

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

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

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

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

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

1*x^2 = 4 // : 1

x^2 = 4

x^2 = 4 // ^ 1/2

abs(x) = 2

x = 2 or x = -2

x in { 2, -2 }

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