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    1+1=x
    x+3
    x=1.5×10∧6(108.5-x)(835-x)
    x²-10x+13=0
    260*3/4*x+140*x=33500
    24x*x+50x+24=0
    24x2+50x+24=0
    3.14×2x+2x=16.56
    x/x^2-1
    X^2+x+20=0
    12x-x2=50√5-50
    1/(x^3+2)
    1-2x-cosx
     [x^2+(x^2-2x)^2]+[(3-x)^2+(x^2-2x-3)^2]=18
    [x^2+(x^2-2x)^2]+[(3-x)^2+(x^2-2x-3)^2]
    (12-3x)(16-9x)=32
    50*sin(x)/sin(36)=20/sin(x+36)
    -147x^2+756x-780=0
    -1.1 | 6x^2+6x-5. | 3-6/7=0
    x^4-x^2+0.251=0

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