Question

Разложите на множители x(x+z-y)+y(y-x-z)+(x-y+z)

Answer 1

$x(x+z-y)+y(y-x-z)-1(x-y+z)=x(x+z-y)- \ -y(x+z-y)+(x+z-y)=(x+z-y)(x-y-1)$