Easy
1 point
ID: #25310
Question
x - 1/x = 4 হলে, x⁴ + 1/x⁴ = কত?
Options
1
322
Correct Answer
2
334
Correct Answer
3
312
Correct Answer
4
223
Correct Answer
Explanation
প্রথমে x² + 1/x² বের করি: (x - 1/x)² + 2 = 4² + 2 = 18।
এবার, x⁴ + 1/x⁴ = (x² + 1/x²)² - 2
= (18)² - 2
= 324 - 2
= 322।
সঠিক উত্তর ৩২২।
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