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判断直线 y = 2x - 5 相对于圆 x^2 + y^2 = 4 是切线、割线还是相离。(代入并求解。)
判断直线 y = 2x - 5 相对于圆 x^2 + y^2 = 4 是切线、割线还是相离。(代入并求解。)
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