120/x=-3x

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Solution for 120/x=-3x equation: 


D( x )

x = 0

x = 0

x = 0

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

120/x = -3*x // + -3*x

120/x-(-3*x) = 0

3*x+120/x = 0

3*x^1+120*x^-1 = 0

(3*x^2+120*x^0)/(x^1) = 0 // * x^2

x^1*(3*x^2+120*x^0) = 0

x^1

3*x^2+120 = 0

3*x^2+120 = 0

DELTA = 0^2-(3*4*120)

DELTA = -1440

DELTA < 0

x in { } 

x belongs to the empty set

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