Question

1(1+x+y)-x(1+x+y)+y(1+x+y)​

Answer 1

Step-by-step explanation:

1(1+x+y)-x(1+x+y)+y(1+x+y)

= (1+x+y)+(-x-x^2-xy)+(y+xy+y^2)

= 1+x-x+y+y-xy+xy-x^2+y^2

= 1+2y-x^2+y^2

Answer 2

Answer:

1+2y-x^2+y^2

Step-by-step explanation:

1(1+x+y)-x(1+x+y)+y(1+x+y)

=1+x+y-x-x^2-xy+y+xy+y^2

=1+2y-x^2+y^2