Question

please factorise it fast

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Answer 1

Step-by-step explanation:

$x {}^{2} + 2 + \frac{1}{x {}^{2} }$

$x {}^{2} + 2 \times x \times \frac{1}{x} + \frac{1}{x {}^{2} }$

$( x + \frac{1}{x} )(x + \frac{1}{x})$