Question

Factorise
x(x²+y²-z²)+y(x²+y²-z²)+z(x²+y²-z²)

Answer 1

Answer:

$as \: there \: is \: ( {x}^{2} + {y}^{2} - {z}^{2} )in \: every \: term \: therefore \\ ( {x}^{2} + {y}^{2} - {z}^{2} )(x + y + z) \\ = {x}^{2} + (y + z)(y - z)(x + y + z)$