solve this problem ????
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Apply the formula a³-b³= (a-b)(a²+ab+b²) For this question the answer is.. =(3m)³-(6n)³ =a=3m,b=6n =(3m-6n)[(3m)²+3m*6n+(6n)²] =(3m-6n)[9m²+18mn+36n] *means MULTIPLY
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