作业帮化简求值2／3a-{1／3－[(3a²-5a+1）－1／3a－5]}
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/20 09:49:44
![化简求值2／3a-{1／3－[(3a²-5a+1）－1／3a－5]}](/uploads/image/z/746241-33-1.jpg?t=%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC2%EF%BC%8F3a-%7B1%EF%BC%8F3%EF%BC%8D%5B%283a%26%23178%3B-5a%2B1%EF%BC%89%EF%BC%8D1%EF%BC%8F3a%EF%BC%8D5%5D%7D)
x){3g61z8QDalhnak
% Z"}
M/+e ԣ
ѡmE9nXES3ʙ$ف hR
化简求值2／3a-{1／3－[(3a²-5a+1）－1／3a－5]}
化简求值2／3a-{1／3－[(3a²-5a+1）－1／3a－5]}
化简求值2／3a-{1／3－[(3a²-5a+1）－1／3a－5]}
2／3a-{1／3－[(3a²-5a+1）－1／3a－5]}
=2／3a-1／3+[(3a²-5a+1）+1／3a+5]
=2／3a-1／3+(3a²-5a+1）+1／3a+5
=2／3a-1／3+3a²-5a+1+1／3a+5
=3a²-4a+17/3