Mathematics
Junior High
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⑵の解き方が分かりません。
丁寧に教えて下さい。

55 a+b=4, ab= (1) a²b+ab² 9 のとき、次の式の値を求めなさい。 4 (2) a² +6² (3) (α²-1)(6²-1)
式の計算の利用

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