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$a + \frac{1}{a} = 4$ হলে ${(a - \frac{1}{a})}^{2}$ এর মান কত?

Created: 1 year ago | Updated: 1 year ago

Updated: 1 year ago

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অষ্টম শ্রেণি (মাধ্যমিক) গণিত অনুশীলনী ৪.১

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