3﹙x+1﹚³﹢81＝0求x
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3﹙x+1﹚³﹢81＝0求x3﹙x+1﹚³﹢81＝0求x3﹙x+1﹚³﹢81＝0求x3﹙x+1﹚³﹢81＝03﹙x+1﹚³=-81﹙x+1﹚³
3﹙x+1﹚³﹢81＝0求x
3﹙x+1﹚³﹢81＝0求x
3﹙x+1﹚³﹢81＝0求x
3﹙x+1﹚³﹢81＝0
3﹙x+1﹚³=-81
﹙x+1﹚³=-27
x+1=-3
x=-3-1
x=-4
(x+1)³=-27
x+1=-3
x=-4
3﹙x+1﹚³﹢81＝0
则(x+1)³=-27
x+1=-3
x=-4