10x^2+11x-6>0
    6x^2+25x+14<0
    16x^2+8x-3<0
    10x^2-33x+20<0
    -2^2+6x-5<0
    2x^2+11x+12>0
    3x^2-37x+12>0
    3x2-37x+12>0
    3x2-37+12>0
    x2-x-12<0
    x2+5x+6>0
    100-a>35
    45a+3400-34a<3800
    260(130-m)+1500m≤58600
    80m+30(30－m)≤1700
    80m+30(30－m)≥1700
    5(x+1)-3x>x+3
    4-0.5≤2x+1<4+0.5
    16X＾2-200X+625=0
    10－x≤7

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