factorise : x³-1/x³-2x+2/x
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Step-by-step explanation:
x3 – 1/x3 + 2x – 2/x
= (x – 1/x)(x2 + 1 + 1/x2) + 2 (x – 1/x)
= (x – 1/x)( x2 + 1 + 1/x2 + 2)
= (x – 1/x)( x2 + 3 + 1/x2 )
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