a*x³=b*y³=c*z³,且1\x+1\y+1\z=1.求证3次根号(ax²+by²+cz²)=3次根号a+3次根号b+3次根号c.
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![a*x³=b*y³=c*z³,且1\x+1\y+1\z=1.求证3次根号(ax²+by²+cz²)=3次根号a+3次根号b+3次根号c.](/uploads/image/z/8581608-0-8.jpg?t=a%2Ax%26sup3%3B%3Db%2Ay%26sup3%3B%3Dc%2Az%26sup3%3B%2C%E4%B8%941%5Cx%2B1%5Cy%2B1%5Cz%3D1.%E6%B1%82%E8%AF%813%E6%AC%A1%E6%A0%B9%E5%8F%B7%EF%BC%88ax%26sup2%3B%2Bby%26sup2%3B%2Bcz%26sup2%3B%EF%BC%89%3D3%E6%AC%A1%E6%A0%B9%E5%8F%B7a%2B3%E6%AC%A1%E6%A0%B9%E5%8F%B7b%2B3%E6%AC%A1%E6%A0%B9%E5%8F%B7c.)
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