Chapter 8 - Polynomials and Factoring - 8-4 Multiplying Special Cases - Practice and Problem-Solving Exercises - Page 497: 56

$ a^{2}+b^{2}+c^{2}+2ab+2bc+2ca $

simplify $(a+b+c)^{2}$ $(a+b+c)\times(a+b+c)$ $(a\times a) + (a\times b) + (a\times c) + (b\times a) + (b\times b) + (b\times c) + (c\times a) + (c\times b) + (c\times c) $ Simplify $ a^{2}+ab+ac+b^{2}+bc+ca+cb+c^{2} $ Simplify $ a^{2}+b^{2}+c^{2}+2ab+2bc+2ca $