✨ Best Answer ✨
a³+1=(a+1)(a²-a+1)
a³+3a²+3a+1=(a+1)(a²-a+1+3a)=(a+1)(a+1)²
より，
与式=(a²-a+1)/(a+1)²
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✨ Best Answer ✨
a³+1=(a+1)(a²-a+1)
a³+3a²+3a+1=(a+1)(a²-a+1+3a)=(a+1)(a+1)²
より，
与式=(a²-a+1)/(a+1)²
Users viewing this question
are also looking at these questions 😉
方程式使ってとくんですね！ありがとうございます💦