X^2+10x+21/x+3

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Solution for X^2+10x+21/x+3 equation: 


D( x )

x = 0

x = 0

x = 0

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

X^2+10*x+21/x+3 = 0

10*x^1+21*x^-1+3*x^0 = 0

(10*x^2+3*x^1+21*x^0)/(x^1) = 0 // * x^2

x^1*(10*x^2+3*x^1+21*x^0) = 0

x^1

10*x^2+3*x+21 = 0

10*x^2+3*x+21 = 0

DELTA = 3^2-(4*10*21)

DELTA = -831

DELTA < 0

x in { } 

x belongs to the empty set

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