Question

i) (x + y)2 – 2xy - xy +
2y + xy​

Answer 1

Answer:

(x+y)²-2xy-xy+2y+xy=0

(x+y)²-xy-xy+2y=0

(x+y)²-2xy+2y=0

x²+y²+2xy-2xy+2y=0

x²+y²+2y=0