Question

X square + x y - x minus y

Answer 1

$x^{2} +xy -x -y$

=  x(x+y) - 1(x+y)

= (x-1)(x+y)  


if it is equal to 0,

then,

(x-1) (x+y) = 0

x = 1   Or  x = -y



i hope this will help you


-by ABHAY