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de thi lop 10 chuyen

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C O C = = = >??? '??? − ==== ++ + () 2 C( < @ 3= O3? 3>??? '? ( − == = ?;:< ?;:< ?;:< ?;:< ?;:< ?;:< ?;:< ?;:< ?;:< ?;:< 6789:;<=1245> R S; 46UVW1XBY46BZ[; () \Q 1'Q2?1>32=α= = X]XB^646[_146-`abU0-ac"B.-ac86Z ?;:< 9@ABC> ?;:<   α    α    (  ( ' ( 2  G F C = from: DAYHOCVATLI.NET N:3⇒dBPX9^646-ac+2? ? 3 EZ[+._YXB; () e \QN?1f32=α= 3 'R Sg; K-`ePB-achi β= d@ j  DN+08⇒ β== d@ j kd@ j l 3 LR1 '; ?? 2?m?kd@ j l =β⇒=α=β+ LR'1 'X; ?? m?f?' =β⇒=β+α LM S; () ()  ' =Ono nE f3no >1?  [ oE 21O  >? = nE ==⇒= = ⇒== 3 ?;<? ?;:< ?;<? 9@ABC> ?;:< ?;<? 6789E;<=1245> E:7pq;7pXq   1 ' YX 17p^Xhr  1r ' +s NYX 3 t7 Δ +#,+ab+aba.8BMX NX '8ab+P3Fac8  ^Xh7; ()( ) ' '' ' 3  k     kΔ−= − D ( )( )() ( )() '   '  3 k k   k  3 k   k Δ−=−Δ−⇒Δ−= − D' LMDD' ()()  '' '    '  '' k   k k  3 k − −= −⇒= − 'LMD ''  ' '  3 k  +Δ ⇒= +Δ 3 L6D'; () () ' ' ' '        k   k −⋅ Δ+ Δ ⋅=−⋅ Δ =−=Δ⇒  D-3 ?;<? ?;<? ?;<? 67$89E;<=1245> )7 l+[7)$[7Ys1 e+#`:MUa.$U8iYs - ? +:-N_#)u6 KNI,eW10-ach1sv:[wY: +I87i3 s^Xh[a.:[wYX+I0-acVW; x L8g+I;Fy[33l x z-+In  UU8iYs[+.-[qM8i{-e,; n  y-  3l (.-  +:-N_PU8iYs;-  y[  3e|- ? x z-+In ' Ya.}6sM[a.+iUU[a.Ys; ?;:< ?;:<  β α β l @  d l @  d  dr dr α o E [ = ' =  n  '  R e n  n ' from: DAYHOCVATLI.NET n ' y- ' 3l (. - ' y[ ' 3De||- ? ( 461B-ac8 ^Xh+I; n ' yF|n  [ ' 3De|3l|- ? 3ly[33l|[  3e3l|- ? 3l () ' ' [ [ ??? ???? e 3 3'? ?  [ [ ???? f??? −− ⇒= = = −− Fqs4-8[qBp+; ()  ReO?O=−=− = 3 ?;:< ?;:< ?;<? 67$89:;?=1245> "#$1PB[P; ~D=  = 2 QQ= ' QQ= > = O = 2 y'= '2> '= = O = ⇒   == O = '2> 2  '= =   < O << < < = ''= '  O ==⋅ =⋅ = B1"#$%;  2 O  m <<<<<<  =+=−=  < 3' <>( mm ⇒= = = '-0#$1PB[P; =  QQ~D= ' QQ= > D= 2 QQ= O  '> 2O = == ' ==  '2>O === ⇒  = = ' = B1-0#$%; @ C y@x@ O (. = <' ' = < @ == O < < ' @ ='= == (46; =' <2 =' < = <' @ C =−= C 2< 23> =' '@ '3 ⇒= = = Ω ?;:< ?;:< ?;<? ?;:< ?;:< ?;:< ?;:<  "#%&(*,   L3R@<L=d L=dL@<CERLR@ FRR@<L=d (L\ ERLERR@]dL<l@R 2   C | x !  !  ! " ! # ! $ "% C " !  !  ! " ! # ! $   C |  x ( from: DAYHOCVATLI.NET

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