Chứng minh quy nạp:
Nếu $(\overline{abc})^2 = \overline{...abc}$ thì $(\overline{abc})^n = \overline{...abc}$
Từ đó tìm $\overline{...abc}$
Nếu $(\overline{abc})^2 = \overline{...abc}$ thì $(\overline{abc})^n = \overline{...abc}$
Started By VMF123, 08-01-2017 - 08:57
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