Factorise : 27 x3 - 8 y3 - 125 z3 - 90 xyz
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Step-by-step explanation:
27x³ - 8y³-125z³ - 90xyz
=> (3x)³ - (2y)³ - (5z)³- 3 x (3x) x (2y) x (5z)
=> (-3x - 5z - 2y)[(-3x)² + (-2y)² + (-5z)² - 3x x 2y - 2y x 5z - 5z x 3x)
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