x=1000*x^2
    (40000+x)*x=0.111
    (45.596+x)*x=0.333
    （1+x）^2.5=1.14
    -0.5x^2+1.5x+2=(5×√41)÷8
    -0.5x^2+1.5x+2=(5×√41)÷8
    4x^3-12x^2+3x-16=0
    sin(53.12)=1.333*sin(x)
    tan(x)=1.333
    tan(x)=1.517/1.333
    x^2*e^x+lnx=0
    3x+2＝5
    tan(x)=1.414/2
    23.24(45-x)^0.75 = 46.29(x-34.5)
    x3- 5x2+ 10x - 80 = 0
    （2X∧2－2）（X－1／2）=2
    10000+11000/((1+x)^1)+12000/((1+x)^2)+13310/((1+x)^3)=14641/((1+x)^4)+16105/((1+x)^5)+17716/((1+x)^6)+19487/((1+x)^7)
    640.59x^1.4504-32.0295x^0.4504+8.3=3323
    10000+11000/((1+x)^1)+12000/((1+x)^2)+13310/((1+x)^3)=14641+16105/((1+x)^1)+17716/((1+x)^2)+19487/((1+x)^3)
    640.59x^1.4504-320295x^04504+8.3=3323

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