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$a^{2} - 3 a - 1 = 0$ হলে, $a^{2} + \frac{1}{a^{2}}$ 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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