Easy
1 point
ID: #23166
Question
x – 1/x = 1, x³ – 1/x³ = ?
Options
1
1
Correct Answer
2
2
Correct Answer
3
3
Correct Answer
4
4
Correct Answer
Explanation
আমরা জানি, a³ - b³ = (a-b)³ + 3ab(a-b)। এখানে, (x - 1/x)³ + 3(x)(1/x)(x - 1/x) = 1³ + 3(1)(1) = 1 + 3 = 4। সঠিক উত্তর ৪।