Question

factorize : 27xcube +y cube +z cube -9xyz
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Answer 1

=> 27x³ + y³ + z³ - 9 xyz

=> (3x)³ + y³ + z³ - 9 xyz

=> (3x + y + z) (9x² + y² + z² - 3xy - yz - 3zx)

[a³ + b³ + c³ - 3abc = (a + b + c) (a² + b² + c² - ab - bc - ca)

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