x+2=4/x-1

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


D( x )

x = 0

x = 0

x = 0

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

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

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

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

1*x^1-4*x^-1+3*x^0 = 0

(1*x^2+3*x^1-4*x^0)/(x^1) = 0 // * x^2

x^1*(1*x^2+3*x^1-4*x^0) = 0

x^1

x^2+3*x-4 = 0

x^2+3*x-4 = 0

DELTA = 3^2-(-4*1*4)

DELTA = 25

DELTA > 0

x = (25^(1/2)-3)/(1*2) or x = (-25^(1/2)-3)/(1*2)

x = 1 or x = -4

x in { -4, 1} 

x in { -4, 1 }

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