The product (x²-1) (x⁴+x²+1) is equal to=

19

The product (a+b) (a-b) (a²-ab+b²) (a²+ab+b²) is equal to

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If = -1, then a³-b³ =

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If a-b=-8, and ab =-12, then a³ – b³ =

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If the volume of a cuboid is 3x²-27, then its possible dimensions are