Mathematics
Senior High

画像1枚目のxの三乗-yの三乗 の式は2枚目の書き方で間違えがないか教えて頂きたいです💦

x³ + y³ = 3 3 (x+y)³-3xy (x+y)
3 x ³- y² = (x-y)² + 3xy (x+y) 3つ

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