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方程组 \begincases 2x + 4y = 8 }, {x + 2y = 4 \endcases 。多少解?(答:无穷多,重合直线。)
方程组 \begincases 2x + 4y = 8 }, {x + 2y = 4 \endcases 。多少解?(答:无穷多,重合直线。)
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