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    M(-M-4)=3
    M(M+4)=3
    M(-M+4)=3
    y^2+5×√2×y+12×y-20×√2=0
    sinx+cosx/2
    20x^2=61.25
    120*1.48^x=300
    (2x-3)(x-1)^5
    12/x-12/1.2x=10
    x²=6x^5(x²/36-5x²/36)²
    x²=(6x(x²/36-5x²/36)²)/x²*x²
    x²=(6x(x²/36-5x²/36)²)/x²*x²
    x²=(6x(x²/36-5x²/36)²)/x²*x²
    x²=(6x(x²/36-5x²/36)²)/x²*x²
    0.8431×6.28=6.28x-sin(2πx)+0.15×6.28×(3x-1.25)
    0.3922*{(x-sin(2πx)/2π)+(3x-1.25)*0.15}=2/3*{(sin(πx))^3/π}+0.15*419/500*{sin(πx)+sin(1.25π-2πx)}/π
    0.6776x-0.0782sin(2πx)-0.0778=0.2122(sin(πx))^3+0.0364sin(πx)+0.0364sin(1.25π-2πx)
    0.42x-0.066845sin(πx)+0.189x-0.07875 = 0.2122(sin(πx)^3)+0.0409sin(πx)+0.0409sin(π(1.25-2x))
    (x^4)+(x^3)+(x^2)+x+1=0
    0.573*{(x-sin(2πx)/2π)+(3x-1.25)*0.134}=2/3*{(sin(πx))^3/π}+0.134*440/500*{sin(πx)+sin(1.25π-2πx)}/π

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