x+y±32=0x+y \pm 3 \sqrt{2}=0x+y±32=0
x−y±32=0x-y \pm 3 \sqrt{2}=0x−y±32=0
x+y±23=0x+y \pm 2 \sqrt{3}=0x+y±23=0
x−y±23=0x-y \pm 2 \sqrt{3}=0x−y±23=0