(a+b+c)3(a+b+c)^3

=a3+b3+c3+3a2b+3ab2+3b2c+3bc2+3a2c+3ac2+6abc=a^3+b^3+c^3 + 3a^2b+3ab^2+3b^2c+3bc^2+3a^2c+3ac^2 + 6abc