(-t³+3t²-5t+7)+(5t²-7t)-(t³-t+3) 帮我看看.最好写过程.

来源：学生作业帮助网编辑：六六作业网时间：2024/12/19 17:55:27

(-t³+3t²-5t+7)+(5t²-7t)-(t³-t+3)帮我看看.最好写过程.(-t³+3t²-5t+7)+(5t²-7t

(-t³+3t²-5t+7)+(5t²-7t)-(t³-t+3) 帮我看看.最好写过程.
(-t³+3t²-5t+7)+(5t²-7t)-(t³-t+3) 帮我看看.最好写过程.

(-t³+3t²-5t+7)+(5t²-7t)-(t³-t+3) 帮我看看.最好写过程.
(-t³+3t²-5t+7)+(5t²-7t)-(t³-t+3)
=-t³+3t²-5t+7+5t²-7t-t³+t-3
=-2t³+8t²-11t+4