Mathematics
Senior High
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高一数1因数分解
ここの解き方教えて欲しいです🙇♀️
39 次の式を因数分解せよ。
(1) xy+x+y+1
(3) xy+2x+3y+6
(2) ab-a-b+1
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理解出来ました！ありがとうございます！