Mathematics
Junior High

⑴(a+1)²+5(a+1)+4
⑵(x-9)²-(9-x)-6
⑶x(y+6)+2y+12
⑷(3a-2)b-6a+4
⑸xy-5x+y-5

の答えと途中式を教えてください。

因数分解

Answers

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