问题 计算题

(9x3y2﹣6x2y+3xy2)÷(﹣3xy)

答案

解:(9x3y2﹣6x2y+3xy2)÷(﹣3xy)

=9x3y2÷(﹣3xy)﹣6x2y÷(﹣3xy)+3xy2÷(﹣3xy)

=﹣3x2y+2x﹣y。

材料分析题

思想品德课堂上,老师正在讲课,同学们津津有味地听课。这时,教室后面,有人怪叫了一声。老师很生气,点名批评了小明。其实,不是小明叫的,小明很苦恼,不知怎么办。结合材料运用所学的知识,回答:

(1)在课堂上怪叫的做法是否正确?为什么?

                                                                                                                                                              

(2)你认为小明该怎么办?

                                                                                                                                                              

                                                                                                                                                              

                                                                                                                                                              

                                                                                                                                                               

                                                                                                                                                               

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