arctanw+arctan0.25w = 90
    arctanw+arctan0.2w = 90
    arctanw+arctan0.25w = 90
    0.6*x^(1/3)+0.177855959-1.32375*x^(1/5)=0
    0.6*x^(1/3)+0.177855959-1.32375*x^(1/5)=0
    0.6*x^(1/3)+0.177855959-0.974316*x^(1/5)=0
    0.6*x^5+0.177855959-0.974316*x^3=0
    s^3+10s^2+25s+10=0
    3（7-3y）-y=1
    3x*3x-14x+12=0
    3x2-14x+12=0
    0.6*x^5+1.29-1.818*x^3=0
    sqrt(m-2024)＋abs(2023-m)＝m
    x=9^9^9^9^9^9
    xxxxxxxxxxx=100000000000000
    x×x+6=42
    60x²＝48.6
    30x-2x²＝72
    x^4+x^3+x^2+x+1=0
    400x=1040-320

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