首页 > 数学 > 题目详情
把关于X的方程x²-x+1/x-1=a=1/a-1变形为方程x+1/x=c+1/c的形式是?方程的解是?已知答
题目内容:
把关于X的方程x²-x+1/x-1=a=1/a-1变形为方程x+1/x=c+1/c的形式是?方程的解是?
已知答案是(x-1)+1/x-1=a-1+1/a-1,解是x1=a,x2=a/a-1 Q啊题目打错了是x²-x+1/x-1=a+1/a-1变形优质解答
(x²-x)/(x-1)+1/(x-1)=a+1/(a-1)
x+1/(x-1)=a+1/(a-1)
两边减去1
(x-1)+1/(x-1)=(a-1)+1/(a-1)
这样吧x-1和a-1看做整体即可 - 追答:
- (a+b/c=a/c+b/c
- 追答:
- 分母是a-1 所以a也要变成a-1 行了,采纳吧
已知答案是(x-1)+1/x-1=a-1+1/a-1,解是x1=a,x2=a/a-1 Q啊题目打错了是x²-x+1/x-1=a+1/a-1变形
优质解答
x+1/(x-1)=a+1/(a-1)
两边减去1
(x-1)+1/(x-1)=(a-1)+1/(a-1)
这样吧x-1和a-1看做整体即可
- 追答:
- (a+b/c=a/c+b/c
- 追答:
- 分母是a-1 所以a也要变成a-1 行了,采纳吧
本题链接: