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    24^2-120x+25/4x^2=2x
    30-2x=4x(30-3x)
    30-2x=4x(30-3x)
    30-2x=4x(30-3x)
    x+1=0
    5x*x-30x+29=0
    15x=24*(x-3)
    5x^2-30x+29=0
    x^2-30x+45=0
     3x^2-32x+52 = 0
    x+4+20+15%x+(x+15%x)*13%=2600
    x^x=2
    (2*sqrt(6)-4)/5*(x-1)+(8*sqrt(6))/5=(1+(4*sqrt(21))/5)/((5*sqrt(15))/4+2)*(x-(5*sqrt(15))/4)+1
    x²-x=lnx
    50x=(x-20)X75
    x*x*x-3*x+1
    1/d+1/(d+2)+1/(d+4)=1/(d+1)
    1/d+1/(d+2)+1/(d+4)=1/(d+1)
    x²=x
    x²=x

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