m+1<=2m+3 m+1>=1 2m+3<=4
    m^2-12m+36 >0
    m^2-14m+36 >0
    0＜x-1/x＜1
    3x/（x^2+2）≥1
    2＜1/（3x-1）≤3
    （3x-11）/（x^2-6x+9）≤1
    （x-1）/（x^2-4x+4）≥0
    （x-1）^2（x+2）/（x-3）（x-4）＜0
    （3x^2+2x+1）/（x^2+x+2）≤1
    （3x2+2x+1）/（x2+x+2）≤1
    （x+1）（x+1）（3x-1）（5+6x）≤0
    1/2-2x/（4x+3）＜0
    -3/（x-3）＞2
    1/4*x^4-1/2*x^2<0
    x>222000
    3x^2+8x＞0
    3x^2+5x-4＜0
    x^2+x-1＜0
    x^3-2x^2＜5x-6

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