Question

(x + y)(x - y) + (y + z)(y - z) + (x + z)(x - z) = 0


please help me​

Answer 1

Answer:

identity of algebraic expression and identities

Answer 2

(x + y)(x - y) + (y + z)(y - z) + (x + z)(x - z) = 0

=> x²-y²+y²-z²+z²-x²=0

=>x²-x²+y²-y²+z²-z²=0

=> 0=0

Proved