7x²+2x-5≤0
    （x-2）＞0
    x*56-x÷2≥360
    (x+115)^3
    (X+115)^2
    √3sin(y)−cos(y)>1
    √3sin(y)-cos(y)>1
    4/7
    x*x-53/7*x+4<0
    5×（17.79−x）+8×17.79＜15.5×13
    -m-1≤1
    -3≤-m-1≤1
    84Q＞0
    sin34<0.77
    5x^2-6x+5＞0
    (450Q*0.13-15Q-30.4)＞0
    (450Q*0.13-15Q-30.4)*0.12＞0
    （450Q*0.13-15Q-30.4)＞0
    （450Q*0.13-15Q-30.4)*0.12＞0
    x²-7x+6＞0

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