设全集U={2,3,x²+2x-3},A={5},CuA=(2,y),求x,y的值求过程详细
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![设全集U={2,3,x²+2x-3},A={5},CuA=(2,y),求x,y的值求过程详细](/uploads/image/z/5507367-15-7.jpg?t=%E8%AE%BE%E5%85%A8%E9%9B%86U%3D%7B2%2C3%2Cx%26%23178%3B%2B2x-3%7D%2CA%3D%7B5%7D%2CCuA%3D%282%2Cy%29%2C%E6%B1%82x%2Cy%E7%9A%84%E5%80%BC%E6%B1%82%E8%BF%87%E7%A8%8B%E8%AF%A6%E7%BB%86)
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设全集U={2,3,x²+2x-3},A={5},CuA=(2,y),求x,y的值求过程详细
设全集U={2,3,x²+2x-3},A={5},CuA=(2,y),求x,y的值求过程详细
设全集U={2,3,x²+2x-3},A={5},CuA=(2,y),求x,y的值求过程详细
U={2,3,x²+2x-3},A={5},CuA=(2,y)
那么x²+2x-3=5
故x²+2x-8=0
那么x=-4或x=2
y=3
即x=-4或x=2,y=3
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