a+b = -1ab = -3/2(a-1/b) + (b-1/a) =(a-1/b) x (b-1/a) =一步一步的步骤yayayayyayaayayyayayayayyayayayayyayayya___________________________________________
来源：学生作业帮助网 编辑：作业帮 时间：2024/08/25 17:56:05
x)KNRU5LSFI
I@V-L!dGóK!Y-@%`"`t%&21x`Tw#s(ŵ(hts~][]C{:t
VT*Ll @ <8