Mathematics, 06.06.2020 21:03, mrstaker1518

Thea enters a positive integer into her calculator, then squares it, then presses the * key, then squares the result, then presses the * key again. After all these steps, the calculator displays $243$. What number did Thea originally enter?

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Thea enters a positive integer into her calculator, then squares it, then presses the * key, then sq...