某数的平方根是a+2和2a-11,那么这个数是多少?
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![某数的平方根是a+2和2a-11,那么这个数是多少?](/uploads/image/z/1010105-17-5.jpg?t=%E6%9F%90%E6%95%B0%E7%9A%84%E5%B9%B3%E6%96%B9%E6%A0%B9%E6%98%AFa%2B2%E5%92%8C2a-11%2C%E9%82%A3%E4%B9%88%E8%BF%99%E4%B8%AA%E6%95%B0%E6%98%AF%E5%A4%9A%E5%B0%91%3F)
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