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[itex]a = \sqrt[3]{1 - 4b - 4c}[/itex]

[itex]b = \sqrt[3]{1 - 4c - 4a}[/itex]

[itex]c = \sqrt[3]{1 - 4a - 4b}[/itex]

Find [itex]\dfrac{1}{a} + \dfrac{1}{b} + \dfrac{1}{c}[/itex]

Thanks

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# Cubic root equations

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