Mathematics
Senior High
(7)が全然分かりません(><)
どなたか解説お願いします┏●
(2) abx?-(a?+6)x+ab
(3) x4-13x2 +36
(5)) a?+b2+ bc-ca-2ab
(⑦ ab(a+b)+bdb+c)+ca(c+a)+3abc
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