(x+1)平方-2(X-1)小于等于4X 怎么解

问题描述:

(x+1)平方-2(X-1)小于等于4X 怎么解

(x+1)平方-2(X-1)≤4X (x+1)平方-2(X-1)-4X ≤0 (x+1)平方-6x+2≤0 x方-4x+3≤0 (x-1)(x-3)≤0 1≤x≤3