х⁴-9=(х²-3)(х²+3)
х²-64=(х-8)(х+8)
а³+х³=(а+х)(а²-ах+х²)
27-х³=(3-х)(9+3х+х²)
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х⁴-9=(х²-3)(х²+3)
х²-64=(х-8)(х+8)
а³+х³=(а+х)(а²-ах+х²)
27-х³=(3-х)(9+3х+х²)