1 . x2-y2+2y-1

• A. $x+y+1$
• B. $x-y$
• C. $x+y-1$
• D. $x-y-1$

Answer: Option C

Explanation:

2 . x2-y2+2y-1

• A. $x+y+1$
• B. $x-y+1$
• C. $x-y-1$
• D. $x-y$

Answer: Option B

Explanation: