AM-1556

Sum and difference of cubes

A Math · Secondary 4 · Easy · Sum and difference of cubes

1. $(x^2 - 1)(x^2 + 1)$
2. $(x^2 - 1)^2$
3. $(x - 1)(x^3 + 1)$
4. $(x - 1)(x + 1)(x^2 + 1)$

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