（1+x）*x=0.0163
    67.6839＝100/(1+r）^6
    61.39133＝100/(1+r）^10
    x^5+10x^3+20x=4
    （1+x）^5=3.9
    1/2+5/6x3/5=
    x*0.13+x=3687
    100＝98.0198*a^2-6*a
    xxx＝1000000
    x×x×x＝2.355328069465
    x^2+（x+16.7）^2-2cos5x^2-33.4cos5x=14.3^2
    76.502×（40-x）0.75=26.863×（x-30）
    sin(x+π)
    sin(x+π)
    sin(x+π)
    sin(x+π)
    sin(x➕π)
    sin(x➕π)
    sin(x➕π)
    p^3-p^2+0.032=0

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