1000x+1000x^2+5000x^3+5000x^4+5000x^5=10127.19
    1000x^2=1
    1000x=1
    x^3-9×x+2=0
    (40+3m)(5-m/2)+(120-4m)(3+1)=120*3+40*5+12
    m^2+24m-216
    -x×(1-x)×(-1-x)-2+8×x=0
    12x^2-2* √11*x=6
    12x^2=9
    9+x^2=（4-x)^2
    9+x^2=（4-x)2
    9+x2=（4-x)2
    (x-0.50965)^2+4.8416^2=x^2
    1/X∧2+2X
    x^2-0.4*x+0.88=0
    24017347816209594＝x∧6
    2*(x^3+x^2+10)/(3x^3+4x+10) x=1.3
    3x^2+4x+10=0
    x^2+x-7943722218936282=0
    x*x+x-7943722218936282=0

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