(a+b)3=a3+b3+3ab(a+b)
a3+b3=(a+b)3-3ab(a+b)
a3+b3=(a+b)(a2-ab+b2)
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A3+b3
a3*b3 = a3b3
(a + b)3 = a3 + 3a2b + 3ab2 + b3
a3 + b3 + c3 + 2(a2)b + 2(b2)c + 2(a2)c + 2ab2 + 2(c2)b +abc
'a' minus 'b' whole cube is equal to 'a cube' minus 'b cube' minus (3 a square b ) plus (3 a b square) . .. .....thanks