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2020年中考数学总复习全套导学案(教师? - 百度文库

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3Ȼ1?1xȻxѡȡһֵ,٣?2x?1x?1ʱԭʽֵ

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4ͬθʽθʽθʽԺͬ⼸θʽͽͬθʽ 5θʽij˷ʽ

a?0b?01a?b=ab2aa =a?0bf0bb6.θʽע1θʽӼȰѸ

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ʽΪθʽٺϲͬθʽֹٸûû򣻢ڲúϲĺϲۻȷܺϲ2θʽij˷ó˷ʽʽ򻯼㣬һдθʽʽ ˼뷽 ǸԵӦ

⾫ 1ҪʹʽAx?1 Dx-1x?0 232?

x?1壬xȡֵΧǣ x B

x?0 Cx??1x?0

1?20Ӧڣ 2A67֮ B78֮ C89֮D910֮

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4ͼABCDſƬϷֱд?23ĸʵȡſƬ

A B C

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3Ȼ1?1xȻxѡȡһֵ,٣?2x?1x?1ʱԭʽֵ 4з̣1x?2x?216??2 x?2x?2x?451??0 222?3x?xxx 5һг2004ȫ·5δٺٶ26ǧ/ʱڸгӼվվõʱԭ1Сʱ֪סվ·312ǧףгǰٶxǧףзȷ( ) A. B. ˼ջ C. D. ü⡿ a2?11a?99ʱʽֵ a?1 13

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