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  5. なぜ(x+1)(y+1)=1になるのかわか...
Mathematics
Senior High
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らむね
らむね

なぜ(x+1)(y+1)=1になるのかわかりません
教えてください🙇

(2) xy+x+y=0 より, x(y+1)+y=0 これより, x(y+1)+(y+1)-130 1 504(x+1)(+1)=1 市 光 とo 11+1も救で

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