1/x(x-n)={1/x-1/(x-n)}/n...
所以该方程化简后得1/x-1/(x+10)=11/12...
结果你自己算吧,是两个答案没错呢~
刚才打错了,是1/(x-1)-1/(x+10)=11/12两边同时乘以(x-1)(x+10)得11=11(x-1)(x+10)/12两边同时乘以12/11得12=(x-1)(x+10)开括号并移项得x²-9x-22=0解出x=-11或x=2
不好意思、我最近脑子有点短路、你能再具体点么?就是把所有的步骤都写出来、拜托了、谢谢
1/(x-1)-1/(x+10)=11/12两边同时乘以(x-1)(x+10)得(x+10)-(x-1)=11(x-1)(x+10)/12即11=11(x-1)(x+10)/12两边同时乘以12/11得12=(x-1)(x+10)开括号得12=x²-9x-10移项得x²-9x-22=0即(x+11)(x-2)=0解出x=-11或x=2