a=6+5 a6-1a3 এর মান কত?
a=6+5 a6-1a3 এর মান কত? Correct Answer 465
a = 6 + 5.'.1a = 16 + 5 = 6 - 5(6 + 5)(6 - 5) = 6 - 5.'.a - 1a = 25এখন, a6 - 1a3 = a6a3 - 1a3 = a3 - 1a3 = (a - 1a)3 + 3.a.1a(a - 1a) = (25)3 + 3.a.1a(a - 1a) = (25)3 + 3 × 25 = 405 + 65 = 465
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Feb 20, 2025