已知全集U={4,m²+2m-3,19}集合A={5},若C∪A={|4m-3|,4}求实数m的值
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![已知全集U={4,m²+2m-3,19}集合A={5},若C∪A={|4m-3|,4}求实数m的值](/uploads/image/z/1750488-24-8.jpg?t=%E5%B7%B2%E7%9F%A5%E5%85%A8%E9%9B%86U%3D%7B4%2Cm%26%23178%3B%EF%BC%8B2m-3%2C19%7D%E9%9B%86%E5%90%88A%3D%7B5%7D%2C%E8%8B%A5C%E2%88%AAA%3D%EF%BD%9B%7C4m-3%7C%2C4%EF%BD%9D%E6%B1%82%E5%AE%9E%E6%95%B0m%E7%9A%84%E5%80%BC)
已知全集U={4,m²+2m-3,19}集合A={5},若C∪A={|4m-3|,4}求实数m的值
已知全集U={4,m²+2m-3,19}集合A={5},若C∪A={|4m-3|,4}求实数m的值
已知全集U={4,m²+2m-3,19}集合A={5},若C∪A={|4m-3|,4}求实数m的值
m²+2m-3=5,m=2或-4
|4m-3|≠5,所以m≠2,m=2(舍去) ,m=-4