Please guide me the best way for solving the question of class 9th ncert math book of Polynomials chapter of math, how i solve this problem in simple way Please guide me for the best and simple solution for this question Write the following cubes in expanded form:(iv) (x−(2/3)y)3

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Using identity, (x –y)

^{3}= x^{3}–y^{3}–3xy(x–y)