(a+b)³＝a³+3a²b＋3ab²＋b³ より
(2x－3)＝8x³－36x²＋54x－27
(a+b)³＝a³+3a²b＋3ab²＋b³ は公式なので覚えておくこと。
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(a+b)³＝a³+3a²b＋3ab²＋b³ より
(2x－3)＝8x³－36x²＋54x－27
(a+b)³＝a³+3a²b＋3ab²＋b³ は公式なので覚えておくこと。
Users viewing this question
are also looking at these questions 😉
答えだと、最後が－27ってなってるんです...