Răspuns:
(a+b+c)3= a^{3}+b^{3}+c^{3}+3a^{2}b+3a^{2}c+3ab^{2}+3b^{2}c+3bc^{2}+3ac^{2}+ 6abca3+b3+c3+3a2b+3a2c+3ab2+3b2c+3bc2+3ac2+6abc
[tex] {(a + b + c)}^{3} = {a}^{3} + {b}^{3} + {c}^{3} + 3 {a}^{2} b + 3 {a}^{2} c + 3 {ab}^{2} + 3 {b}^{2} c + 3 {bc}^{2} + 3 {ac}^{2} + 6abc[/tex]
