Mathematics
Senior High
Resolved
説明お願いします。
例題 14 因数分解の工夫[3」・・
次の式を因数分解せよ。
(1) (a+b+c)(ab+bc+ca)-abc
(2)
2(b-c)+6°(c-a)+c(a-b)
H
+he (1)
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