福建省莆田20xx-20xx学年八年级下学期第一次月考数学试卷内容摘要:
32 ( D)324ab 二. 填空题: 11 当 x___________时,52 x有意义; ,则这三个数分别为 __________. 13.□ ABCD 中,若∠ A∶∠ B=2∶ 3,则∠ C=_________,∠ D=_________ 14.24n是整数,则正整数 的最小值是 _________ 15. 在实数范围内分解因式: 62x = 16. 观察下列各式:1 1 1 1 1 11 2 , 2 3 ,3 4 ,....3 3 4 4 5 5 请你将发现的 规律用含自然数 n(n≥1)的等式表示出来 . 三 .解答题 : ( 10 分) (1)24964ab ( 0, 0)ab (2)144250 81010 .. ( 10 分)。福建省莆田20xx-20xx学年八年级下学期第一次月考数学试卷
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