xlog(2,x)+(1-x)log(2,1-x) =-1.35
    xlog(2,x)+(1-x)log(2,1-x)=1.35
    xlog(2,x)+(1-x)log(2,1-x)
    xlog2x+(1-x)log2(1-x)=1.35
    0.72*3-7x=0.06
    2*(3-x)^2+5*(3-x)=0
    abs(x×e3)
    4x^5-2x^3+8x^2-5
    3（x-7）=2（1+x）-12
    3.59x=sin(2πx)
    3.59x=sin(2x)
    X*0.0045=3000.86
    5x²-46x+64＝0
    1/3X+（8700 -x）×1/2=12100-8700
    1x/3+（8700 -x）×1/2=12100-8700
    64+x*x-8x=4x*x
    0.7156*cos(x)+1.72263*cos(x)*sin(x/2)-0.23855 = 0
    X^3-250X^2+4000X
    （x+1）（x+1）+（2/x+2）（2/x+2）=5
    （x+1）（x+1）+（0.5x+2）（0.5x+2）=5

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