a+1a=3
a+1a=3 Correct Answer 47
দেওয়া আছে, (a + 1/a) = 3 = > (a + 1/a)2 = 32 [ উভয় পাশে বর্গ করে] = > a2 + 2.a.1/a + 1/a2 = 9 = > a2 + 1/a2 = 9 - 2 = 7 = > (a2 + 1/a2)2 = 72 [ উভয় পাশে বর্গ করে] = > (a2)2 + 2.a2. 1/a2 + (1/a2)2 = 49 = > a4 + 2 + 1/a4 = 49 = > a4 + 1/a4 = 49 - 2 = 47Ans = 47
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Feb 20, 2025