(完整版)分式计算专项练习题

3 •化简求值:5.化简求值:6.化简求值:7.化简求值:8.化简求值:9.化简求值:护 - 2ab —bZa _ bb-a1化简求值:2 .化简求值:a.■?a +4a+4亠(1-::2 _寸2■