化简 a+3分之2+3-a分之3+a²-9分之a+15
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 18:15:55
![化简 a+3分之2+3-a分之3+a²-9分之a+15](/uploads/image/z/956283-51-3.jpg?t=%E5%8C%96%E7%AE%80+a%2B3%E5%88%86%E4%B9%8B2%2B3-a%E5%88%86%E4%B9%8B3%2Ba%26%23178%3B-9%E5%88%86%E4%B9%8Ba%2B15)
化简 a+3分之2+3-a分之3+a²-9分之a+15
化简 a+3分之2+3-a分之3+a²-9分之a+15
化简 a+3分之2+3-a分之3+a²-9分之a+15
2/(a+3) +3/(3-a) +(a+15)/(a²-9)
=2/(a+3)-3/(a-3)+(a+15)/[(a+3)(a-3)]
=[2(a-3)-3(a+3)+(a+15)]/[(a+3)(a-3)]
=(2a-6-3a-9+a+15)/[(a+3)(a-3)]
=0/[(a+3)(a-3)]
=0