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What are the possible polynomial expressions for dimensions of the cuboid whose volume is x3 – x ?

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Volume of cuboid = x3 – x 

By splitting x3 – x as factors 

x3 – x = x(x2 – 1) = x(x + 1) (x – 1) 

Possible dimensions of cuboid are x, (x + 1) and (x – 1)

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