✨ Best Answer ✨
x²-2x-2y²+2y=0
→ (x-1)²-1-2(y²-y)=0
→ (x-1)²-2(y²-y+1/4)+1/2-1=0
→ (x-1)²-2(y-1/2)²=1/2
(2)ですが、平方完成の部分が分かりません
途中式をお願いします
✨ Best Answer ✨
x²-2x-2y²+2y=0
→ (x-1)²-1-2(y²-y)=0
→ (x-1)²-2(y²-y+1/4)+1/2-1=0
→ (x-1)²-2(y-1/2)²=1/2
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