Question

Simplify: (x+y+z)²-(x-y+z)²​

Answer 1

Hi

===

given,

(x+y+z)^2-(x-y+z)^2

as we compare with a^2-b^2 then we get (x+y+z+x-y+z) (x+y+z-x+y-z)

(2x+2z)×2y

4(xy+yz)

===============