作业帮2t²+3t²-(3t²+5t-t²)
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/28 23:13:43
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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