0.5x48+48x+120=72x
    tan（90√x）=3.4715248569532574081083
    tan（90√x）=0
    tan（90x）=0
    tanx=0
    tanx=0
    X^3-2.41×243.308^2-（27.08-8.45×0.0001×243.308^2）×X^2=0
    x²-1725x+575826=0
    2^x=x
    2^x+7^x+x^2+x=-125
    0.9*1.15*x=3.68
    2^x+7^x+x^2+x=-125
    e^x（x-sinx）=-1
    e^x（x-sinx）=0
    x+3/x=100
    3.2x+4（x-5）=20.2
    X^3-2.41×257.7755^2-（27.08-8.45×0.0001×257.7755^2）×X^2=0
    3.2x+4（x-5）=20.2
    X^3-2.41×338.7345^2-（27.08-8.45×0.0001×338.7345^2）×X^2=0
    e^z-z^2-z=1

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