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

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


x in (-oo:+oo)

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

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

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

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

( -1 )

-1 = 0

x belongs to the empty set

( x )

x = 0

( x^2-4 )

1*x^2 = 4 // : 1

x^2 = 4

x^2 = 4 // ^ 1/2

abs(x) = 2

x = 2 or x = -2

x in { 0, 2, -2 }

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