(t-24)*20/18+20=t
    116/x＝1.5lnx-2.3
    (t-24)*20/18+20=t
    2y^3+13y^2=250
    2y^3+10.5y^2=250
    scs30
    cac30
    8400/(x+52)+10000/(x+52)+7500/x=150
    10000/(x+52)+10000/(x+52)+7500/x=150
    [（x+1/100000）*（1/100000）]/（x-1/100000）=1.8/10000
    X²-2x-3=0
    t²-14t+4=0
    t2-14t+4=0
    x+√x(x+1)+√x(x+1)+√(x+1)(x+2)=2
    x+√x(x+1)+√x(x+1)+√(x+1)(x+2)=2
    x+√x√(x+1)+√x√x+2+√(x+1)√(x+2)=2
    x+√x√(x+1)+√x√x+2+√(x+1)√(x+2)=2
    8^2+X^2=（4+X）^2
    4X^2+4X+10＝1-8X
    4X^2+4X+101-8X

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