46.2×0.4+46.2×0.4×b=24.486
    46.2×0.3+46.2×0.3×b=24.486
    46.2×0.5+46.2×0.5×b=24.486
    46.2×0.3+46.2×0.3×b=24.486
    46.2×0.3+46.2×0.6×b=24.486
    46.2×0.6+46.2×0.6×b=24.486
     (1-arcsinx)^2
    a×0.5 =0.53
     x^2+0.052x-0.10044=0
    15.6×a-15.6×0.15+3 = 8.9
    15.6×a-15.6×0.15+3=18.4
    15.6×a-（15.6×0.15）+3=18.4
    15.6×a-（15.6×0.15）+3=18.4
    x^2+8x+68
    1.3x-x=150
    -3L^2+2L+48 = 0
    -3L^2+2L+48=0
    -3L^2+2L+48=0
    0.0007x^5-0.0184x^4+0.1614x^3-0.5774x^2+0.8688x-0.4375=0.5
    3Q^2-8Q+100=135

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