大神求解!!!!!!
1个回答
展开全部
=[a/a(a-3)-2a/(a+3)(a-3)]×[(a+3)/(a-2)]
=[(a+3)-2a]/[(a+3)(a-3)]×[(a+3)/(a-2)]
=[-(a-3)/(a-3)(a+3)]×[(a+3)/(a+2)]
=-(a+3)/(a-2)
由题可知a-3a≠0 a-9≠0 a-2≠0 即a≠2. a≠±3 a≠0
即a=-2 带入得原式=1/4
=[(a+3)-2a]/[(a+3)(a-3)]×[(a+3)/(a-2)]
=[-(a-3)/(a-3)(a+3)]×[(a+3)/(a+2)]
=-(a+3)/(a-2)
由题可知a-3a≠0 a-9≠0 a-2≠0 即a≠2. a≠±3 a≠0
即a=-2 带入得原式=1/4
追答
={[a/a(a-3)-2a]/(a+3)(a-3)}×[(a+3)/(a-2)]
=[(a+3)-2a]/[(a+3)(a-3)]×[(a+3)/(a-2)]
=[-(a-3)/(a-3)(a+3)]×[(a+3)/(a+2)]
=-(a+3)/(a-2)
由题可知a-3a≠0 a-9≠0 a-2≠0 即a≠2. a≠±3 a≠0
即a=-2 带入得原式=1/4
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询