-4/x-1=2x

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Solution for -4/x-1=2x equation: 


D( x )

x = 0

x = 0

x = 0

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

-4/x-1 = 2*x // - 2*x

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

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

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

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

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

x^1

-2*x^2-x-4 = 0

-2*x^2-x-4 = 0

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

DELTA = -31

DELTA < 0

x in { } 

x belongs to the empty set

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