solve 3x 2次-x-2<0?
回答 (2)
✔ 最佳答案
Sol
(1) 3x^2-x-2<0
(3x+2)(x-1)<0
(x+2/3)(x-1)<0
(x-1)(x+2/3)<0
x-1<0,x+2/3>0
x<1,x>-2/3
-2/3<x<1
收錄日期: 2021-04-18 17:57:02
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