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(3x - 2y)3
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Using the formula,
(x - y)3 = x3 - y3 - 3x2y + 3xy2
= (3x)3 - (2y)3 - 3 x (3x)2x (2y) + 3 x (3x) x (2y)2
= 27x3 - 8y3 - 54x2y + 36xy2
Hence, (3x - 2y)3 = 27x3 - 8y3 - 54x2y + 36xy2
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