x+1/x+2-1/x+7=x+2/x+3-1/x+6
ji..............................sorry,(x+1)/(x+2)-1/(x+7)=(X+2)/(x+3)-1/(X+6)...
ji..............................
sorry,(x+1)/(x+2)-1/(x+7)=(X+2)/(x+3)-1/(X+6) 展开
sorry,(x+1)/(x+2)-1/(x+7)=(X+2)/(x+3)-1/(X+6) 展开
2个回答
展开全部
解：(x+1)/(x+2)-(x+2)/(x+3)=1/(x+7)-1/(x+6)
(x+1)(x+3)-(x+2)(x+2)/(x+2)(x+3)=x+6-(x+7)/(x+7)(x+6)
x^2+4x+3-(x^2+4x+4)/x^2+5x+6=x+6-x-7/x^2+13x+42
-1/x^2+5x+6=-1/x^2+13x+42
x^2+5x+6=x^2+13x+42
-8x=36
x=-9/2
(x+1)(x+3)-(x+2)(x+2)/(x+2)(x+3)=x+6-(x+7)/(x+7)(x+6)
x^2+4x+3-(x^2+4x+4)/x^2+5x+6=x+6-x-7/x^2+13x+42
-1/x^2+5x+6=-1/x^2+13x+42
x^2+5x+6=x^2+13x+42
-8x=36
x=-9/2
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
推荐律师服务：
若未解决您的问题，请您详细描述您的问题，通过百度律临进行免费专业咨询
