Mathematics
Junior High
Resolved

21番の答えなのですがどうして(3x+y-2)(3x+y+1)になるのか分かりません誰か教えてください🙏🙏🙏

□ ②1 (3x+y)2-3x-y-2 (49) a=15,6=6のとき,次の

Answers

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