Factorise 8a cube - 27b cube - 64c cube - 72abc
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Answer:
a cube +b cube +c cube -3abc
2a cube - 3b cube -4c cube -3(2)(3)(4)
(2a-3b-4c) cube
(2a-3b-4c) (2a-3b-4c) (2a-3b-4c)
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