Question
Download Solution PDFIf
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Concept used:
If a + 1/a = b, then
a3 + 1/a3 = b3 - 3b
Calculation:
x2 - 5x + 1 = 0
⇒ x2 + 1 = 5x
⇒ x + 1/x = 5
Now,
⇒
⇒
⇒
⇒
⇒ 23
∴ The required answer is 23.
Last updated on Jul 22, 2025
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