x+7/x+5

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Solution for x+7/x+5 equation: 


D( x )

x = 0

x = 0

x = 0

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

x+7/x+5 = 0

1*x^1+7*x^-1+5*x^0 = 0

(1*x^2+5*x^1+7*x^0)/(x^1) = 0 // * x^2

x^1*(1*x^2+5*x^1+7*x^0) = 0

x^1

x^2+5*x+7 = 0

x^2+5*x+7 = 0

DELTA = 5^2-(1*4*7)

DELTA = -3

DELTA < 0

x in { } 

x belongs to the empty set

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