(1)如果代数式2a+I4-5aI+I1-3aI的值是固定不变的,试求a的取值范围(2)已知有理数p、q满足p+2q=0(q不等于0),则IIqI分之p-1I+Iq分之IpI-2I+IIq分之pI-3I=(3)已知整数a、b、c、d满足abcd=25,且a》b》c》d,
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![(1)如果代数式2a+I4-5aI+I1-3aI的值是固定不变的,试求a的取值范围(2)已知有理数p、q满足p+2q=0(q不等于0),则IIqI分之p-1I+Iq分之IpI-2I+IIq分之pI-3I=(3)已知整数a、b、c、d满足abcd=25,且a》b》c》d,](/uploads/image/z/1720224-0-4.jpg?t=%EF%BC%881%EF%BC%89%E5%A6%82%E6%9E%9C%E4%BB%A3%E6%95%B0%E5%BC%8F2a%2BI4-5aI%2BI1-3aI%E7%9A%84%E5%80%BC%E6%98%AF%E5%9B%BA%E5%AE%9A%E4%B8%8D%E5%8F%98%E7%9A%84%2C%E8%AF%95%E6%B1%82a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%EF%BC%882%EF%BC%89%E5%B7%B2%E7%9F%A5%E6%9C%89%E7%90%86%E6%95%B0p%E3%80%81q%E6%BB%A1%E8%B6%B3p%2B2q%3D0%28q%E4%B8%8D%E7%AD%89%E4%BA%8E0%29%2C%E5%88%99IIqI%E5%88%86%E4%B9%8Bp-1I%2BIq%E5%88%86%E4%B9%8BIpI-2I%2BIIq%E5%88%86%E4%B9%8BpI-3I%3D%EF%BC%883%EF%BC%89%E5%B7%B2%E7%9F%A5%E6%95%B4%E6%95%B0a%E3%80%81b%E3%80%81c%E3%80%81d%E6%BB%A1%E8%B6%B3abcd%3D25%2C%E4%B8%94a%E3%80%8Bb%E3%80%8Bc%E3%80%8Bd%2C)
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