10×（10^6.02+10^5.51）-10lg2
    8(x+3)+15=3(x+3)
    3*x^2+6*x+2=0
    m-48=122
    5000/(500+x)/2=8
    s^4-3s^2-4=0
    -3*x^2+6*x+2=0
    5e^4-18e^3-12e+24e^2+(243/16)=0
    7.8x^(3)+38.7x^(2)-198x-356.4
    4/x=1.5
    x+(0.06x)^10=54881
    x+(0.005x)^8=60000
    x+(0.05x)^6=30000
    2[a(1-2^^(3))]/(1-2)=a(1-2^^(3)^^(2))/(1-2)
    x2 −4x + 8 = 0
    x2 −3x−1 = 0
    4x2 −12x + 9 = 0
    20+x=1/3（5x+20）
    -2x^5+8x^4-24x^3+24x^2+243/16=0
    3x2 + 4x + 1 = 0

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