Question

Simplify (x+y+z)square - (x-y+z)square

Answer 1

SOLUTION IS ATTACHED☺

Answer 2

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

here,

= (x+y+z)^2 - (x-y+z)^2 

= x^2 +y^2 + z^2 + 2(ab +cb+ca) -[ x^2 +(-y^2) + z^2 + 2(ab+bc+ca)]

=x^2 +y^2 +z^2 + 2(ab+bc+ca)- [x^2+ y^2 + z^2 + 2(ab+bc+ca)]

=x^2 + y^2 +2(ab+bc+ca) - x^2 -y^2 -z^2 -2(ab+bc+ca)

= all will cancel 

then then answer is  0 


i hope this will help you 



-by ABHAY