x-((x^2-7)/(2x))

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Solution for x-((x^2-7)/(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)

x-((x^2-7)/(2*x)) = 0

(-1*(x^2-7))/(2*x)+x = 0

(-1*(x^2-7))/(2*x)+(2*x*x)/(2*x) = 0

2*x*x-1*(x^2-7) = 0

x^2+7 = 0

(x^2+7)/(2*x) = 0

(x^2+7)/(2*x) = 0 // * 2*x

x^2+7 = 0

1*x^2 = -7 // : 1

x^2 = -7

x belongs to the empty set

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