(2/x+6)+(3+x)

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Solution for (2/x+6)+(3+x) equation: 


D( x )

x = 0

x = 0

x = 0

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

x+2/x+3+6 = 0

1*x^1+2*x^-1+9*x^0 = 0

(1*x^2+9*x^1+2*x^0)/(x^1) = 0 // * x^2

x^1*(1*x^2+9*x^1+2*x^0) = 0

x^1

x^2+9*x+2 = 0

x^2+9*x+2 = 0

DELTA = 9^2-(1*2*4)

DELTA = 73

DELTA > 0

x = (73^(1/2)-9)/(1*2) or x = (-73^(1/2)-9)/(1*2)

x = (73^(1/2)-9)/2 or x = (-(73^(1/2)+9))/2

x in { (-(73^(1/2)+9))/2, (73^(1/2)-9)/2} 

x in { (-(73^(1/2)+9))/2, (73^(1/2)-9)/2 }

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