3﹙x+1﹚³﹢81＝0求x
问题描述：
3﹙x+1﹚³﹢81＝0求x
答
3﹙x+1﹚³﹢81＝0
则(x+1)³=-27
x+1=-3
x=-4
答
(x+1)³=-27
x+1=-3
x=-4
答
3﹙x+1﹚³﹢81＝0
3﹙x+1﹚³=-81
﹙x+1﹚³=-27
x+1=-3
x=-3-1
x=-4