Mathematics
Senior High
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ここまでの計算合ってるか教えてください🙏🙏
四 (リ α(b-c) + Blc-a)+cla-b)
= a'bEa'etBecabtae-be
E aeb -bc+b°c-ab-ac+a?
-bla?-c)-6(a-c) - acla'-e)
-blatc)(a-c) - B(a-c)-aclatc)(a-c)
-ca-c)Elatc)6-bー1a+c)ac 3
こ(a-c)をbーてなfc)b+ acla+c)3
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