(а+8)³-8 = (а+8)³–2³ = (а+8-2)(а²+16а+64+2а+16+4) = (а+6)(а²+18а+84)
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(а+8)³-8 = (а+8)³–2³ = (а+8-2)(а²+16а+64+2а+16+4) = (а+6)(а²+18а+84)