Easy
1 point
ID: #27764
Question
(a + 1/a)² = 3 হলে, a³ + 1/a³ এর মান কত?
Options
1
3√3
Correct Answer
2
18
Correct Answer
3
9
Correct Answer
4
0
Correct Answer
Explanation
দেওয়া আছে, (a + 1/a)² = 3, সুতরাং a + 1/a = √3। আমরা জানি, a³ + 1/a³ = (a + 1/a)³ - 3.a.(1/a)(a + 1/a) = (√3)³ - 3(√3) = 3√3 - 3√3 = 0।
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