Concurs "Teodor Topan" - problema 3

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maky
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Concurs "Teodor Topan" - problema 3

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Fie \( z\in\mathbb{C} \)astfel incat \( \mid2z+3\mid=\mid3z+4\mid \). Aratati ca \( \mid{z}\mid\in\left[1,\frac{7}{5}\right] \)
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