Question

Find the sum of
2b²-2bc+c²-ca and b²+bc-c²+ca​

Answer 1

Answer:

2b^2-2bc+b^2+bc

3b^2-bc

Answer 2

Step-by-step explanation:

$we \: have \: to \: find \: sum \: of \\ \: 2 {b}^{2} - 2bc + {c}^{2} - ca \\ \:and \: {b}^{2} + bc - {c}^{2} + ca \\ \\ collecting \: the \: like \: term \\ (2 {b}^{2} + {b}^{2}) + ( - 2bc + bc) + ( + {c}^{2} - {c}^{2}) + (ca - ca) \\ 3 {b}^{2} + ( - bc) + (0) + (0) \\ 3 {b}^{2} - bc$