1、已知│x+1│+(y+2y)∧2=0,则x∧y=( ) 2、已知a是有理数,则│a-2001│+│a-2002│的最小值是( ) 3、设x,y,a都是整数,│x│=1-a,│y│=2+2a-a∧2,则a=( ) 4、有理数a,b,c均不为0,且a+b+c=0,设x=│a的
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![1、已知│x+1│+(y+2y)∧2=0,则x∧y=( ) 2、已知a是有理数,则│a-2001│+│a-2002│的最小值是( ) 3、设x,y,a都是整数,│x│=1-a,│y│=2+2a-a∧2,则a=( ) 4、有理数a,b,c均不为0,且a+b+c=0,设x=│a的](/uploads/image/z/969940-28-0.jpg?t=1%E3%80%81%E5%B7%B2%E7%9F%A5%E2%94%82x%2B1%E2%94%82%2B%EF%BC%88y%2B2y%EF%BC%89%E2%88%A72%3D0%2C%E5%88%99x%E2%88%A7y%3D%EF%BC%88+%EF%BC%89+2%E3%80%81%E5%B7%B2%E7%9F%A5a%E6%98%AF%E6%9C%89%E7%90%86%E6%95%B0%2C%E5%88%99%E2%94%82a-2001%E2%94%82%2B%E2%94%82a-2002%E2%94%82%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC%E6%98%AF%EF%BC%88+%EF%BC%89+3%E3%80%81%E8%AE%BEx%2Cy%2Ca%E9%83%BD%E6%98%AF%E6%95%B4%E6%95%B0%2C%E2%94%82x%E2%94%82%3D1-a%2C%E2%94%82y%E2%94%82%3D2%2B2a-a%E2%88%A72%2C%E5%88%99a%3D%EF%BC%88+%EF%BC%89+4%E3%80%81%E6%9C%89%E7%90%86%E6%95%B0a%2Cb%2Cc%E5%9D%87%E4%B8%8D%E4%B8%BA0%2C%E4%B8%94a%2Bb%2Bc%3D0%2C%E8%AE%BEx%3D%E2%94%82a%E7%9A%84)
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