y=560÷0.2y
    y=560÷0.2y
    X4+17X3-150X2-250X=598
    17X3-150X2-250X=598
    x^3-2x+4=0
    6x^2-20x+13=0
    x^3-2x=0
    2*x^3-10*x^2-25＝0
    X÷9-25XX+14000X=684
    x^3/9-25x^2+14000x+684=0
    X3÷9-25X2+1400 0X=684
    1-6x＾2=0.3696（x＾3-5x）
    100×(1+R×90/365) =110
    sin(arcsin(1/a))
    sina*arcsin(1/a)
    sinx/x
    x^x=100
    x^x=100
    x^x=100
    x^x=30

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