Question

To verify the algebraic identity. (a+b+c)^2=a^2+b^2+c^2+2ab+2bc+2ca
please help​

Answer 1

Answer:

L. H. S

(a+b+c) ^2

={(a+b) +c}^2

=(a+b) ^2+2(a+b) c+c^2

=a^2+2ab+c^2+2ac+2bc+c^2

=a^2+b^2+c^2+2ab+2bc+2ca(R.H.S)