Factors-3

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a 2 + 1 / a 2 + 2 - 5 a - 5 / a

Solution :

a 2 + 1 / a 2 + 2 - 5 a - 5 / a= (a 2 + 1 / a 2 + 2) - 5 (a + 1 / a)

= (a + 1 / a) 2 - 5 (a + 1 / a)

= (a + 1 / a) (a + 1 / a - 5)

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