z^2+8z/z

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Solution for z^2+8z/z equation: 


D( z )

z = 0

z = 0

z = 0

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

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

1*z^2 = -8 // : 1

z^2 = -8

z belongs to the empty set

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