已知集合A={x丨-2≤x≤3},B={y丨y=2x+3,x∈A},C={z丨z=x²,x∈A}求B∪C和(CRB)∪(CRC)
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![已知集合A={x丨-2≤x≤3},B={y丨y=2x+3,x∈A},C={z丨z=x²,x∈A}求B∪C和(CRB)∪(CRC)](/uploads/image/z/5904694-46-4.jpg?t=%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%7Bx%E4%B8%A8-2%E2%89%A4x%E2%89%A43%7D%2CB%3D%7By%E4%B8%A8y%3D2x%2B3%2Cx%E2%88%88A%7D%2CC%3D%7Bz%E4%B8%A8z%3Dx%26%23178%3B%2Cx%E2%88%88A%7D%E6%B1%82B%E2%88%AAC%E5%92%8C%EF%BC%88CRB%EF%BC%89%E2%88%AA%EF%BC%88CRC%EF%BC%89)
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