[3a²-﹙ ﹚]÷﹙-a﹚=-3a=2b
问题描述:
[3a²-﹙ ﹚]÷﹙-a﹚=-3a=2b
是[3a²-﹙ ﹚]÷﹙-a﹚=-3a+2b
答
[3a²-﹙2ab﹚]÷﹙-a﹚=-3a+2b
[3a²-﹙ ﹚]÷﹙-a﹚=-3a=2b
是[3a²-﹙ ﹚]÷﹙-a﹚=-3a+2b
[3a²-﹙2ab﹚]÷﹙-a﹚=-3a+2b