factorize x^3+8y^3+64z^3-24xyz
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x³ + 8 y³ + 64 z³ -24xyz
(x + 2y+ 4z ) ³ -3 × x × 2y × 4z
(x + 2y + 4z)³ - 24xyz
(x + 2 y + 4z ) ( x² + 4y² + 16z² -2xy -8 yz - 4xz )
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