Question

Show that
Det (x y z
x² y² z² = (x-y)(y-z)(z-x)(x+y+z)
y+z z+x x+y )

Answer 1

it is an formula for expansion.....

x²+y²+z²=(x-y)(y-z)(z-x)(x+y+z)(y+z×z+x×x+y)

hope it helps u