1 . x2+y2=9

• A. $x+y\pm 3\sqrt{2}=0$
• B. $x-y\pm 3\sqrt{2}=0$
• C. $x-y\pm 2\sqrt{3}=0$
• D. $x+y\pm 2\sqrt{3}=0$

Answer: Option B

Explanation:

2 . x2+y2=9

• A. $x+y\pm 3\sqrt{2}=0$
• B. $x-y\pm 3\sqrt{2}=0$
• C. $x+2\pm 2\sqrt{3}=0$
• D. $x-y\pm 2\sqrt{3}=0$

Answer: Option B

Explanation: