-0.00000002x^3+0.00002x^2+0.00005x-0.0036=0.841
    46-6x=22
    1600=(a+128)+3a
    1600=(a+128)+4a
    0.724=-0.0001x^4+0.0028x^3-0.0167x^2+0.0386x-0.0237
    X（X十41）一770＝0
    sin(1/ x²)
    X（x十41x）一770＝0
    XxX十41X一770＝0
    sin(1/ x²)
    0=x＾3-4x＾2+5x-2
    -0.00002x^3+0.0116x^2-0.0635x+0.0763=0.732
    -0.00002x^3+0.0116x^2+0.0763=0.732
    0.011x^2-0.0602x+0.0714=0.732
    0.000006x^2+0.0034x-0.1323=0.681
    6x^2+3400x+813300=0
    48/x-48/(x+8)=1
    xx+8x=384
    48/x-48/(x+8)=1
    x^6-3*x^5-5*x^4+10*x^3-5*x^2-3*x+3=0

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