Question

ADD THE FOLLOWING ab + bc + ca and - bc - ca - ab​

Answer 1

$\huge{\underline{\underline{\boxed{\sf{\purple{Answer}}}}}}$

${ \mathtt{\blue{ab + bc + ca + ( - bc - ca - ab)}}} \\{ \mathtt{\blue{ab + bc + ca - bc - ca - ab }}} \\ { \mathtt{\blue{ab - ab + bc - bc + ca - ca}}} \\ { \mathtt{\blue{ = 0}}}$

${ \mathtt{ \green{0 \: is \: the \: answer \: }}}$