Mathematics
Senior High
複２次式の因数分解の問題です！
2行目から3行目の式変形がどのようになっているのかわかりません。
教えてください🙇♀️
3
3
[a³ = A, b³ =B <]
(5) a6-b6=(a³)²-(6³)² = A²-B²
3
= (A + B)(A − B): = (a³ +
b³)(a³-b³)
= (a + b)(a²- ab + b²)(a - b) a² + ab + b²)
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