Question

a(b-c)-b(c-a)-c(a-b)

PLEASE TELL ​

Answer 1

$\tt{}a(b-c)-b(c-a)-c(a-b) \\ \tt{}ab - ac - bc + ba - ca + cb$

• Rearranging the terms,

$\tt{}ab + ba- ac- ca - bc + cb \\ \to \: \tt \green{ 2ab - 2ac - 2bc} \\ \to \: \tt \pink{ 2(ab - ac - bc)}$