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上海市《高中数学复习用基本训练题》(附解答)二、代数式这一节中有一个如下的例题(第7页) 2.2取什么数值时,(3)6/(x~2+3x+2)是自然数:原书(1979年11月版)作了如下的解答
Shanghai “Basic Training Questions for Review of Mathematics in Senior Middle Schools” (with answers) II. Algebraic Formulas There is an example in this section (page 7) 2.2 What values to take (3) 6/(x~2+3x+) 2) Natural number: The original book (November 1979) made the following answer