A = 2 and B = 2
3(2) - 2(2) = 6 - 4 = 2.
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(a + b+ c)3 = a3 + b3 + c3 + 3a2b + 3ab2 + 3b2c + 3bc2 + 3c2a + 3ca2 + 6abc
a3+b3=(a+b)3-3a2b-3ab2
(a + b)3 = a3 + 3a2b + 3ab2 + b3
3a3b + 12a2b2 + 9a5b3 = 3a2b (a + 4b + 3a3b2)
a3+b3+c3+3a2b+3a2c+3b2c+3ab2+3ac2+3bc2+6abc