(x-1)(x-1)-(x-0.0631)(x-6.1282)=0
    x×x+8×x=80
    384*x*x-180x=81
    2m-4等于3m-1
    2706.16/(0.904×1×37.57)=
    x*x-32x+231
    (6-x)[(3-x)^2-16]-8(3-x)-32=0
    1×1.2×25×(0.4×0.6×35.2)+1.4×10×35.2+5102.96×0.1+1×1.2×25×(0.4×0.6×35.2)+1.4×5×35.2+9497.86×0.1=
    1×1.2×25×(0.4×0.6×35.2)+1.4×10×35.2+5102.96×0.1
    x^3+x^2=42
    X^2+40X+400=10400
    x∧2－2x+5＝0
    4.97a^2+0.07a-1.03=0
    10^[7.63x/(241.9+x)} = 0.7*10^(152.6/261.9)
    (2240/x）^2+(x/(x+480))^2 = 1
    (4896/x）^2+(x/(x+1196))^2 = 1
    (15228/x）^2+(x/(x+3568))^2 = 1
    (12240/x）^2+(x/(x+3588))^2 = 1
    10^[7.63x/(241.9+x)}=0.7*10(152.6/261.9)
    (8460/x）^2+(x/(x+2250))^2=1

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