(a+2b+c)cube. Show steps
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A3+8b3+6à+b2c+6a+bc2+c3
Step-by-step explanation:
(a+2b+c)3
= (a+2b)3+3(a+2b)2c+3(a+2b)c2+c2
= A3+8b3+6à+b2c+6a+bc2+c3
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