Mathematics
Senior High
教えて欲しいです
5 (やや難) 次の式を因数分解せよ。
abc+ab+bc + ca+a+b+c + 1
(1)
(2) (a + 5)(b + c)(c + α ) + abc
(3)
a(b + c)² + b(c+a)² + ca+b)²-4abc
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