Mathematics
Junior High
Solved
この問題の解き方を詳しく教えてほしいです🥲
答えは
⑦4a²+4ab+b²−c²−6c−9
⑧−a²+9x²+12xy+4y²+2a−1
です。
© (2a+b+c+3)(2a+b-c-3)
O (3z+2y+a-1)(32+2y-a+1)
Answers
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ありがとうございます😭