510+129n＞1100-40n
    4a×a－73a＋324≤0
    13.8+4.3x>18.3+3.3x
    x^3>10
    x^3+3x^2-40>0
    -3＜X≤2
    9m²+72m-4≤0
    (2x+1)(3x+2)>12
    4a^2-4a+1-4a^3>0
    x2-10x＞50
    -sinx-cosx-1＞0
    -x²+4x-4＜0
    x+1/2x+1≥2
    （80000－6200x）（80÷（1－x%）－80）＞0
    x+1/2x+1≥2
    80÷（1－x%）×（80000－6200x）×x%≥160000
    4x^2-13<0
    (800-13330.88+x)*0.75/27000≥12%
    (800-12168.93+x)*0.75/2700≥5%
    282+（x-60）*3.5+x+200-200 ＜ 2*{[282+（x/2-60）*3.5]+x/2+120-200}

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