X^3-7x-6/x-4

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Solution for X^3-7x-6/x-4 equation: 


D( x )

x = 0

x = 0

x = 0

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

X^3-(7*x)-(6/x)-4 = 0

X^3-7*x-6*x^-1-4 = 0

-7*x^1-6*x^-1-4*x^0 = 0

(-7*x^2-4*x^1-6*x^0)/(x^1) = 0 // * x^2

x^1*(-7*x^2-4*x^1-6*x^0) = 0

x^1

-7*x^2-4*x-6 = 0

-7*x^2-4*x-6 = 0

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

DELTA = -152

DELTA < 0

x in { } 

x belongs to the empty set

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