4/4-x-2/x-9=0

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Solution for 4/4-x-2/x-9=0 equation: 


D( x )

x = 0

x = 0

x = 0

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

4/4-x-(2/x)-9 = 0

4/4-x-2*x^-1-9 = 0

-1*x^1-2*x^-1-8*x^0 = 0

(-1*x^2-8*x^1-2*x^0)/(x^1) = 0 // * x^2

x^1*(-1*x^2-8*x^1-2*x^0) = 0

x^1

-x^2-8*x-2 = 0

-x^2-8*x-2 = 0

DELTA = (-8)^2-(-2*(-1)*4)

DELTA = 56

DELTA > 0

x = (56^(1/2)+8)/(-1*2) or x = (8-56^(1/2))/(-1*2)

x = (2*14^(1/2)+8)/(-2) or x = (8-2*14^(1/2))/(-2)

x in { (2*14^(1/2)+8)/(-2), (8-2*14^(1/2))/(-2)} 

x in { (2*14^(1/2)+8)/(-2), (8-2*14^(1/2))/(-2) }

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