-8z^2/z^4-z^2

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Solution for -8z^2/z^4-z^2 equation: 


D( z )

z^4 = 0

z^4 = 0

z^4 = 0

1*z^4 = 0 // : 1

z^4 = 0

z = 0

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

(-8*z^2)/(z^4)-z^2 = 0

-z^2-8*z^-2 = 0

t_1 = z^2

-1*t_1^1-8*t_1^-1 = 0

-1*t_1^1-8*t_1^-1 = 0

(-1*t_1^2-8*t_1^0)/(t_1^1) = 0 // * t_1^2

t_1^1*(-1*t_1^2-8*t_1^0) = 0

t_1^1

-t_1^2-8 = 0

-t_1^2-8 = 0

DELTA = 0^2-(-8*(-1)*4)

DELTA = -32

DELTA < 0

t_1 in { } 

z belongs to the empty set

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