4/x+1-2=x+1

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


D( x )

x = 0

x = 0

x = 0

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

4/x-2+1 = x+1 // - x+1

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

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

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

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

x^1

4-x^2-2*x = 0

4-x^2-2*x = 0

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

DELTA = 20

DELTA > 0

x = (20^(1/2)+2)/(-1*2) or x = (2-20^(1/2))/(-1*2)

x = (2*5^(1/2)+2)/(-2) or x = (2-2*5^(1/2))/(-2)

x in { (2*5^(1/2)+2)/(-2), (2-2*5^(1/2))/(-2)} 

x in { (2*5^(1/2)+2)/(-2), (2-2*5^(1/2))/(-2) }

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