已知三次根下1-2x,三次根下3y-2互为相反数,求代数式y/1+2x的值
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![已知三次根下1-2x,三次根下3y-2互为相反数,求代数式y/1+2x的值](/uploads/image/z/2711184-24-4.jpg?t=%E5%B7%B2%E7%9F%A5%E4%B8%89%E6%AC%A1%E6%A0%B9%E4%B8%8B1-2x%2C%E4%B8%89%E6%AC%A1%E6%A0%B9%E4%B8%8B3y-2%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E6%B1%82%E4%BB%A3%E6%95%B0%E5%BC%8Fy%2F1%2B2x%E7%9A%84%E5%80%BC)
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已知三次根下1-2x,三次根下3y-2互为相反数,求代数式y/1+2x的值
已知三次根下1-2x,三次根下3y-2互为相反数,求代数式y/1+2x的值
已知三次根下1-2x,三次根下3y-2互为相反数,求代数式y/1+2x的值
(三次根下1-2x ) =-(三次根下3y-2)
所以
(三次根下1-2x )^3 =[-(三次根下3y-2)]^3
所以 1-2x=-(3y-2)求得3y=1+2x
所以y/1+2x=y/3y=1/3