Math, asked by Nitesh08102005, 4 months ago

If x = 2 + root5, find the value of x2 -1/x2

Answers

Answered by anonymous111777

5

(2+_/5)² _ 1/ (2+_/5)²

(2+_/5)⁴ _ 1

___________

(2+_/5)²

now solve

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