Hi, good morning to all. I would have some help about these three exercises.
[math]A\, =\, \{z\, \in\, \mathbb{C}\, :\, \bar{z}^5\, -\, |z|^5\, =\, 0\}[/math]
[math]B\, =\, \left\{z\, \in\, \mathbb{C}\, :\, \dfrac{z\, -\, 2}{\bar{z}\, +\, 4}\, -\, \dfrac{z\, +\, 4}{\bar{z}\, -\, 2}\, =\, 4\right\}[/math]
[math]C\, =\, \{z\, \in\, \mathbb{C}\, :\, z^3\, +\, 9iz^2\, -\, 27z\, -\, 30i\, =\, 0\}[/math]
I don't know how to solve them. Thank you for your support and help
[math]A\, =\, \{z\, \in\, \mathbb{C}\, :\, \bar{z}^5\, -\, |z|^5\, =\, 0\}[/math]
[math]B\, =\, \left\{z\, \in\, \mathbb{C}\, :\, \dfrac{z\, -\, 2}{\bar{z}\, +\, 4}\, -\, \dfrac{z\, +\, 4}{\bar{z}\, -\, 2}\, =\, 4\right\}[/math]
[math]C\, =\, \{z\, \in\, \mathbb{C}\, :\, z^3\, +\, 9iz^2\, -\, 27z\, -\, 30i\, =\, 0\}[/math]
I don't know how to solve them. Thank you for your support and help
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