单项式-x^2的系数是( ) ,次数是 ( ).2.式子-ab^2*c和2a^2*y^2的共同点是 ( ). 3.单项式πr^2的系数与次数的和是( ) . 4.已知单项式2x^(a-1)*y的次数
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![单项式-x^2的系数是( ) ,次数是 ( ).2.式子-ab^2*c和2a^2*y^2的共同点是 ( ). 3.单项式πr^2的系数与次数的和是( ) . 4.已知单项式2x^(a-1)*y的次数](/uploads/image/z/1031192-8-2.jpg?t=%E5%8D%95%E9%A1%B9%E5%BC%8F-x%5E2%E7%9A%84%E7%B3%BB%E6%95%B0%E6%98%AF%EF%BC%88+++++++++++%EF%BC%89+%2C%E6%AC%A1%E6%95%B0%E6%98%AF+%EF%BC%88++++++++++++++%EF%BC%89.2.%E5%BC%8F%E5%AD%90-ab%5E2%2Ac%E5%92%8C2a%5E2%2Ay%5E2%E7%9A%84%E5%85%B1%E5%90%8C%E7%82%B9%E6%98%AF++%EF%BC%88+++++++++++++%EF%BC%89.++3.%E5%8D%95%E9%A1%B9%E5%BC%8F%CF%80r%5E2%E7%9A%84%E7%B3%BB%E6%95%B0%E4%B8%8E%E6%AC%A1%E6%95%B0%E7%9A%84%E5%92%8C%E6%98%AF%EF%BC%88++++++++++++++%EF%BC%89++++.++4.%E5%B7%B2%E7%9F%A5%E5%8D%95%E9%A1%B9%E5%BC%8F2x%5E%28a-1%29%2Ay%E7%9A%84%E6%AC%A1%E6%95%B0)
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