Question

solve it properly using identity ​

Answer 1

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Answer 2

Answer:

Step-by-step explanation:

x+1/x=4

taking square on both side

$x^{2} +\frac{1}{x^{2} } +2=16\\x^{2} +\frac{1}{x^{2} }=16-2\\x^{2} +\frac{1}{x^{2} }=14$