Mathematics
Senior High
矢印のところの分母の変形を教えて下さい
bc
与式=
(2) 5₁=(a−b)(a—c)
+
ca
(a−b)(b-c)
ab
(b-c)(a-c)
bc(b-c)-ca(a-c)+ab(a-b)
(a−b)(b-c)(a-c)
(b-c){a²-(b+c)a+bc}
(a-b)(b-c)(a-c)
(a-b)(a-c)
(a-b)(a-c)
=1
(V)-
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