(-9x^3+3x*2-15x)/(-3x)

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Solution for (-9x^3+3x*2-15x)/(-3x) equation: 


D( x )

-3*x = 0

-3*x = 0

-3*x = 0

-3*x = 0 // : -3

x = 0

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

(2*3*x-9*x^3-(15*x))/(-3*x) = 0

(2*3*x-9*x^3-15*x)/(-3*x) = 0

(-9*x^3-9*x)/(-3*x) = 0

-9*x^3-9*x = 0

-9*x*(x^2+1) = 0

1*x^2 = -1 // : 1

x^2 = -1

-9*x = 0

(-9*x)/(-3*x) = 0

-9*x = 0 // : -9

x = 0

x in { 0} 

x belongs to the empty set

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