x^2+x=250
    6√3x＝（6√2－6）（6√2－6）
    sin(x+90-51.49)=sin(90-51.49)*e(-x/tan51.49)
    sin(x-60)=1
    sin(x-π/3)=1
    sin(x-π/3)=1
    7/18×（3/4-x）＝5/9
    x^2/(0.100－x) = 1.75*10^-5
    x^2/(0.100－x) = 1.75*10^-5
    x^2/(0.1－x) = 1.75*10^-5
    x^2=x
    √3(10-4x)=3x
    √3(10-4x)=3x
    x^6+125x^4+2500x^2-225000=0
    x-7/1x=6
    1-75%x =37.5/100
    ㏑x＝0.283709268
    9.48*9.48*10^6/π/5.42/9/x=e^(6.32*6.32*10^6/2/5.42/x)
    ㏑x＝0.2837
    1-75%x=37.5%

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