Question

Skmplify (a+b+c)^2+(a-b-c)^2

Answer 1

Answer:

(a+b+c)^2= a^2 +b^2 +c^2 +2ab +2bc+2ca

Answer 2

solution:-

=> (a+b+c)^2 – (a-b-c)^2

by formula,

x^2 – y^2= (x+y)(x-y)

now,

(a+b+c)^2 – (a-b-c)^2

=(a+b+c+a-b-c) {a+b+c-(a-b-c)}

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

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

=4ab + 4ac

i hope it helps you....