(1)-5<2x+1<6(2)-2<1-(1/5)x<3/5
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(1)-5<2x+1<6(2)-2<1-(1/5)x<3/5(1)-5<2x+1<6(2)-2<1-(1/5)x<3/5(1)-5<2x+1<6(2)-2<1-(1/5)x<3/5-5<2x+1<6-
(1)-5<2x+1<6(2)-2<1-(1/5)x<3/5
(1)-5<2x+1<6
(2)-2<1-(1/5)x<3/5
(1)-5<2x+1<6(2)-2<1-(1/5)x<3/5
-5<2x+1<6
-6<2X<5
-3
-3<-1/5*X<3/5-1
15>X>-3+5
2
-5<2x+1<6
-6<2x<5
-3<x<5/2
-2<1-(1/5)x<3/5
-3/5<(1/5)x-1<2
4/5<(1/5)x<3
4<x<15
(1)-3
(1)-6<2x<5,-3
第一题
-5<2x+1<6
-6<2x<5
-3<x<5/2
第二题
-2<1-(1/5)x<3/5
-3<-(1/5)x<-(2/5)
-15<-x<-2
2<x<15
已知3(5x+2)+5<4x-6(x+1),化简|x+1|-|x|
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若x²+px+q<0的解集为{x|1<x<2},则不等式x²+px+q/x²-5x-6>0的的解集为(1) x(x+1)(x-2)除以(x+2)(x-1)≥0 (2) (x+1)²(2-x)除以x(4+x)≥0
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