Question

数学分式的加减

请写出过程，谢谢！！

Answer 1

1/(a-1)-2/(1-a^2)
=1/(a-1)-2/(1-a)(1+a)
=1/(a-1)+2/(a-1)(1+a)
=(a+1)/(a-1)(a+1)+2/(a-1)(a+1)
=(a+3)/(a^2-1)
希望能帮到你

Answer 2

数理答疑团为您解答，希望对你有所帮助。

原式=(a+1)/(a+1)(a-1) + 2/(a+1)(a-1)
=(a+3)/(a+1)(a-1)
=(a+3)/(a²-1)

祝你学习进步，更上一层楼！ (*^__^*)