(1500-200)*110(X-110/2)+100×X^2*X=6.667*4926(1234-X)
    (1500-200)×110(X-110/2)+100×X^2X=6.667×4926(1234-X)
    (1500-200)×110〖(X-110/2)+200×X^2〗X/2=6.667×4926(1234-X)
    (1500-200)×110〖(x-110/2)+200×x^2〗x/2=6.667×4926(1234-x)
    0.5×1500×X^2=6.667×4926×(1234-X)
    (100-x)2x=1000+8000
    X^(X+1)=15625
    x^5+10x^3+20x-4=0
    (100-x)2(60-x)=1000+8000
    x^2-80x+576=0
    x^2-80x+576
    x^2-80x+72
    x^2-80x+576
    （（x*cos30)/1.4/130）+((x*sin30) /110.4)=1
    （（x*cos30)/130）+((x*sin30) /110.4)=1.3
    （（x*cos30)/130）^2+((x*sin30) /110.4)^2=1
    （（x*cos30)/130）^2+((x*sin30) /110.4)^2=1
    （（x*cos30)/(1.4*130)）+((x*sin30) /110.4)=1
    （133.59 /(x*cos30)）^2+(110.40 /(x*sin30))^2=1
    （133.59 /(1.4*x*cos30)）+(110.40 /(x*sin30))=1

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