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Answer:
= −189x³ +162xy² -14xyz - 71xz² - 120y³ + 327yx² +79yz² + 14z³ - 474zx² + 62zy²
Step-by-step explanation:
= 7x+5y+2z,3x−6y+7z,−9x+4y+z
= −(9x−4y−z)(3x−6y+7z)(7x+5y+2z)
= −189x³ +162xy² -14xyz - 71xz² - 120y³ + 327yx² +79yz² + 14z³ - 474zx² + 62zy²
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