设A={x|x²+4x=0},B={x|x²+2(a+1)x+a²-1=0},若B是A的真子集,求实数a的值 请给出详细过程此题我已经弄清楚了 下面为正确过程X²﹢4X=0 x(x+4)=0 x=0,或-4,集合A={-4,0}所以 A的子集为{-4} {0} {-4
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![设A={x|x²+4x=0},B={x|x²+2(a+1)x+a²-1=0},若B是A的真子集,求实数a的值 请给出详细过程此题我已经弄清楚了 下面为正确过程X²﹢4X=0 x(x+4)=0 x=0,或-4,集合A={-4,0}所以 A的子集为{-4} {0} {-4](/uploads/image/z/3000567-39-7.jpg?t=%E8%AE%BEA%3D%7Bx%7Cx%26%23178%3B%2B4x%3D0%7D%2CB%3D%7Bx%7Cx%26%23178%3B%2B2%EF%BC%88a%2B1%29x%2Ba%26%23178%3B-1%3D0%7D%2C%E8%8B%A5B%E6%98%AFA%E7%9A%84%E7%9C%9F%E5%AD%90%E9%9B%86%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%80%BC+%E8%AF%B7%E7%BB%99%E5%87%BA%E8%AF%A6%E7%BB%86%E8%BF%87%E7%A8%8B%E6%AD%A4%E9%A2%98%E6%88%91%E5%B7%B2%E7%BB%8F%E5%BC%84%E6%B8%85%E6%A5%9A%E4%BA%86+%E4%B8%8B%E9%9D%A2%E4%B8%BA%E6%AD%A3%E7%A1%AE%E8%BF%87%E7%A8%8BX%26%23178%3B%EF%B9%A24X%3D0++x%28x%2B4%29%3D0++x%3D0%2C%E6%88%96-4%EF%BC%8C%E9%9B%86%E5%90%88A%3D%7B-4%2C0%7D%E6%89%80%E4%BB%A5+A%E7%9A%84%E5%AD%90%E9%9B%86%E4%B8%BA%7B-4%7D+%7B0%7D+%7B-4)
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