Question

(b) if x +1/x=11, find x⁴ +1/x⁴=?​

Answer 1

x + 1/x = 11

=> (x + 1/x)² = (11)²

=> x²+1/x²+2 = 121

=> x²+1/x² = 121-2

=> x²+1/x² = 119

=> (x²+1/x²)² = (119)²

=> x⁴+1/x⁴+2 = 23681

=> x⁴+1/x⁴ = 23681-2

=> x⁴+1/x⁴ = 23679

Answer 2

Answer:

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Step-by-step explanation:

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