Question

2. (i) (x + y + 1) (x – y + 1);
​

Answer 1

THIS MAY HELP YOU................................

Answer 2

Answer:

Step-by-step explanation:

solution

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

= $x^{2}$ - xy + x + xy -  $y^{2}$ + y + x - y + 1

= $x^{2} - y^{2}$ + xy - xy + x + x + 1

= $x^{2} - y^{2}$ + 2x + 1