3(5-z)/z=-z

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Solution for 3(5-z)/z=-z equation: 


D( z )

z = 0

z = 0

z = 0

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

(3*(5-z))/z = -z // + z

(3*(5-z))/z+z = 0

(3*(5-z))/z+(z^2)/z = 0

3*(5-z)+z^2 = 0

z^2-3*z+15 = 0

z^2-3*z+15 = 0

z^2-3*z+15 = 0

DELTA = (-3)^2-(1*4*15)

DELTA = -51

DELTA < 0

1 = 0

1/z = 0

1/z = 0 // * z

1 = 0

z belongs to the empty set

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