(x-2)/√(x+2)
    0.003x∧2＋62x－100000＝0
    2x²-5x-1=0
    3x²＋1=4x
    3x²-5x=0
    lnx=0.44
    e^x=2-x
    lnx=e^x
    2t²－3t＋3＝0
    0.5 t^2+t+1
    X=2arcsin(2x/3π)
    x=2arcsin(x/π)
     (x-1)²+1.5² = (x-0.5)²
    1-cosx^2
    (x+79）/(x+148)=0.7
    (x+129）/(x+243)=0.7
    x+129/(x+243)=0.7
    1-y/-3y+2=2
    x^3-9x+6=0
    loge^n=6.289653

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