Question

simplify (a+b+c)² - (a-b+c)²

Answer 1

This is your answer
Hope this will help you

Answer 2

PROOF:-(a+b+c)^2 can be written as (a+b+c)*(a+b+c)

Therefore,

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

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

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

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

= a^2 + b^2 + c^2 + 2ab + 2bc + 2ca