原式化简:
左边=(2a-b-c)/(a-c)(a-b)+(2b-c-a)/(b-c)(b-a)+(2c-a-b)/(c-a)(c-b)
整理得:
(2a-b-c)/(a-c)(a-b)-(2b-c-a)/(b-c)(a-b)+(2c-a-b)/(a-c)(b-c)
通分:
[(2a-b-c)(b-c)-(2b-c-a)(a-c)+(2c-a-b)(a-b)]/(a-b)(b-c)(a-c)
化简得0=右边
求证:(2a-b-c/a^2-ab-ac+bc)+(2b-c-a/b^2-bc-ab+ac)+(2c-a-b/c^2-ac-bc+ab)=0
求证:(2a-b-c/a^2-ab-ac+bc)+(2b-c-a/b^2-bc-ab+ac)+(2c-a-b/c^2-ac-bc+ab)=0
其他人气:181 ℃时间:2020-01-29 14:36:26
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