初一 整式加减 运算题目1、求多项式x^2yz-x^4+1/2x^2·y^2-1/6x^2·y^2+x^4-1/2x^2·y^2的值,其中x=1,y=-1/2,z=-1/3.(这题中的/全部是分号,1/2就是二分之一)2、如果(x+1)^2+|y+2|=0,求代数式5xy-3/2x^3·y^2-4xy+1/2y^2·
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![初一 整式加减 运算题目1、求多项式x^2yz-x^4+1/2x^2·y^2-1/6x^2·y^2+x^4-1/2x^2·y^2的值,其中x=1,y=-1/2,z=-1/3.(这题中的/全部是分号,1/2就是二分之一)2、如果(x+1)^2+|y+2|=0,求代数式5xy-3/2x^3·y^2-4xy+1/2y^2·](/uploads/image/z/9478666-10-6.jpg?t=%E5%88%9D%E4%B8%80+%E6%95%B4%E5%BC%8F%E5%8A%A0%E5%87%8F+%E8%BF%90%E7%AE%97%E9%A2%98%E7%9B%AE1%E3%80%81%E6%B1%82%E5%A4%9A%E9%A1%B9%E5%BC%8Fx%5E2yz-x%5E4%2B1%2F2x%5E2%C2%B7y%5E2-1%2F6x%5E2%C2%B7y%5E2%2Bx%5E4-1%2F2x%5E2%C2%B7y%5E2%E7%9A%84%E5%80%BC%2C%E5%85%B6%E4%B8%ADx%3D1%2Cy%3D-1%2F2%2Cz%3D-1%2F3.%EF%BC%88%E8%BF%99%E9%A2%98%E4%B8%AD%E7%9A%84%2F%E5%85%A8%E9%83%A8%E6%98%AF%E5%88%86%E5%8F%B7%2C1%2F2%E5%B0%B1%E6%98%AF%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%80%EF%BC%892%E3%80%81%E5%A6%82%E6%9E%9C%28x%2B1%29%5E2%2B%7Cy%2B2%7C%3D0%2C%E6%B1%82%E4%BB%A3%E6%95%B0%E5%BC%8F5xy-3%2F2x%5E3%C2%B7y%5E2-4xy%2B1%2F2y%5E2%C2%B7)
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