Easy
1 point
ID: #28233
Question
x – 1/x =1 হলে x³ – 1/x³ এর মান কত?
Options
1
2
Correct Answer
2
6
Correct Answer
3
4
Correct Answer
4
8
Correct Answer
Explanation
আমরা জানি, a³ - b³ = (a-b)³ + 3ab(a-b)। এখানে, x³ - (1/x)³ = (x - 1/x)³ + 3.x.(1/x).(x - 1/x) = 1³ + 3.1 = 1 + 3 = 4।
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Type
Single Choice
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