2t²+3t²-(3t²+5t-t²)
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/25 08:37:01
2t²+3t²-(3t²+5t-t²)2t²+3t²-(3t²+5t-t²)2t²+3t²-(3t&
2t²+3t²-(3t²+5t-t²)
2t²+3t²-(3t²+5t-t²)
2t²+3t²-(3t²+5t-t²)
2t²+3t²-(3t²+5t-t²)
=2t²+3t²-3t²-5t+t²
=3t²-5t
2t²+3t²-(3t²+5t-t²)=5t²-（2t²+5t)=5t²-2t²-5t=3t²-5t