7/x+6=x

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Solution for 7/x+6=x equation: 


D( x )

x = 0

x = 0

x = 0

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

7/x+6 = x // - x

7/x-x+6 = 0

7*x^-1-1*x^1+6*x^0 = 0

(6*x^1-1*x^2+7*x^0)/(x^1) = 0 // * x^2

x^1*(6*x^1-1*x^2+7*x^0) = 0

x^1

6*x-x^2+7 = 0

6*x-x^2+7 = 0

DELTA = 6^2-(-1*4*7)

DELTA = 64

DELTA > 0

x = (64^(1/2)-6)/(-1*2) or x = (-64^(1/2)-6)/(-1*2)

x = -1 or x = 7

x in { -1, 7} 

x in { -1, 7 }

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