de thi dap an Toan 9 - 33

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de thi dap an Toan 9 - 33

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 SỞ GIÁO DỤC- ĐÀO TẠOKỲ THI TUYỂN SINH VÀO LỚP 10 THPT QUẢNG NGÃI Năm học 2009 - 2010 Môn thi : Toán ( Hệ chuyên) Thời gian làm bài :150 phút Bài 1:(3,5 điểm)                    !"#$%&'     (  x x  ) !"#$%&x  *x(+&**,-./01232#0*24 !"# $%&56#,-0123278  !"#24232#0*.956#+ :' 1)(1,0 điểm) ;$#< ( ) ( ) =            >    +?  ?     ?     ? @           ,-)>=$.!A2'   ?  !"#$%&' ( )    (     x x  BC10' ( ) =     ( (    (  ( ( ( ( x x x x x x     ≤ ≤       ≥ ≤ ⇔ ⇒ ≤ ⇒ ≥ ≤ >     (x x⇔ − = + −      D  ( (x x x⇔ − = + − + −   ( x⇔ − = > !"#$%&>29#0*  x = E  x = − >$F*G,H.C10 8I#0*24 !"#$%&.G2)7-  x = E  x = −  3)(1,5 điểm) BC10  * ? J (∆ = <  x K  x 7-#0*24 !"#$%&+LM#*N$$$O#P13$$#QR  x J  x + S)S$$29'     *  x x x x      + = − = TU$32' ( ) ( ) ( ) ( )                    ?x x x x x x x x x x x x x x  − = + −      − = − + −       'BVLTW  ĐỀ CHÍNH THỨC  X$29' ( )    ? 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