z^2*z^8/z^9

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Solution for z^2*z^8/z^9 equation: 


D( z )

z^9 = 0

z^9 = 0

z^9 = 0

1*z^9 = 0 // : 1

z^9 = 0

z = 0

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

(z^2*z^8)/(z^9) = 0

z = 0

z in { 0} 

z belongs to the empty set

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