已知(x-15)^2=169,(y-1)^3=-0.125,求根号x-根号2xy+三次根号2y-x的值.
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![已知(x-15)^2=169,(y-1)^3=-0.125,求根号x-根号2xy+三次根号2y-x的值.](/uploads/image/z/372819-3-9.jpg?t=%E5%B7%B2%E7%9F%A5%28x-15%29%5E2%3D169%2C%28y-1%29%5E3%3D-0.125%2C%E6%B1%82%E6%A0%B9%E5%8F%B7x-%E6%A0%B9%E5%8F%B72xy%2B%E4%B8%89%E6%AC%A1%E6%A0%B9%E5%8F%B72y-x%E7%9A%84%E5%80%BC.)
已知(x-15)^2=169,(y-1)^3=-0.125,求根号x-根号2xy+三次根号2y-x的值.
已知(x-15)^2=169,(y-1)^3=-0.125,求根号x-根号2xy+三次根号2y-x的值.
已知(x-15)^2=169,(y-1)^3=-0.125,求根号x-根号2xy+三次根号2y-x的值.
由于x〉=0得x-15=13 x=28 y-1=-0.5 y=0.5 「28-「28-3=-3
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