(X-5/X+4)+3

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Solution for (X-5/X+4)+3 equation: 


D( X )

X = 0

X = 0

X = 0

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

X-(5/X)+3+4 = 0

X-5*X^-1+3+4 = 0

1*X^1-5*X^-1+7*X^0 = 0

(1*X^2+7*X^1-5*X^0)/(X^1) = 0 // * X^2

X^1*(1*X^2+7*X^1-5*X^0) = 0

X^1

X^2+7*X-5 = 0

X^2+7*X-5 = 0

DELTA = 7^2-(-5*1*4)

DELTA = 69

DELTA > 0

X = (69^(1/2)-7)/(1*2) or X = (-69^(1/2)-7)/(1*2)

X = (69^(1/2)-7)/2 or X = (-(69^(1/2)+7))/2

X in { (-(69^(1/2)+7))/2, (69^(1/2)-7)/2} 

X in { (-(69^(1/2)+7))/2, (69^(1/2)-7)/2 }

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