X^2+20x+91/x+7

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Solution for X^2+20x+91/x+7 equation: 


D( x )

x = 0

x = 0

x = 0

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

X^2+20*x+91/x+7 = 0

20*x^1+91*x^-1+7*x^0 = 0

(20*x^2+7*x^1+91*x^0)/(x^1) = 0 // * x^2

x^1*(20*x^2+7*x^1+91*x^0) = 0

x^1

20*x^2+7*x+91 = 0

20*x^2+7*x+91 = 0

DELTA = 7^2-(4*20*91)

DELTA = -7231

DELTA < 0

x in { } 

x belongs to the empty set

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