5x+7/x-1=7

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Solution for 5x+7/x-1=7 equation: 


D( x )

x = 0

x = 0

x = 0

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

5*x+7/x-1 = 7 // - 7

5*x+7/x-7-1 = 0

5*x^1+7*x^-1-8*x^0 = 0

(5*x^2-8*x^1+7*x^0)/(x^1) = 0 // * x^2

x^1*(5*x^2-8*x^1+7*x^0) = 0

x^1

5*x^2-8*x+7 = 0

5*x^2-8*x+7 = 0

DELTA = (-8)^2-(4*5*7)

DELTA = -76

DELTA < 0

x in { } 

x belongs to the empty set

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