TiÕt 58: LuyÖn tËp TiÕt 57: LuyÖn tËp !"#$%&'(' )* + + + , , )- . . . //… 00 00 . 00 )--./ TiÕt 57: LuyÖn tËp - TiÕt 57: LuyÖn tËp '1 23§¹i sè456$7" !8*9$3 4:;<= *>?)->@ 4:A(BCD )(2& E!=4F "6< -=4F "6*G#-=4F "6'HF0009$/ IE 9$00-!J¥clit" <=3'2(!K@ 'L>MN 1$<=AOP=4F "6</ IE 9$00!=4F "6)(245 E" '2(!! J3 4:"' Q'2Jiuzhang Suanshu/ IE 9$0!JHero 4:R>)=A E!=4F "6) (2" S'&'&<=!J3$6/ IE 9$00!JRT)=Diophantus-4: OP4> KU3)(2N-A*H'2(!?H 3$6;"$V->$W G "64">: E3!=4F "6)(2**8>M'H(2/ TiÕt 57: LuyÖn tËp x 2 5x 2 y -4y -x 4xyz yz 2 CXYXYZ DX. .Y .. LXYXYZ UX Y I X.+.YX+..YZ EX Y T'<F [ TP=W-$%W>$\'/ [ %\'] 450&$/ [ ^W>$ _'L454` 0 &$- 454` &$/ TiÕt 57: LuyÖn tËp x 2 5x 2 y -4y -x 4xyz yz 2 CXYXYZDX. .Y .. LXYXYZ UX Y I X.+.YX+..YZEX Y E U C L I D a'>C^b>!Jc> TiÕt 58: LuyÖn tËpTiÕt 57: LuyÖn tËp TiÕt 58: LuyÖn tËpTiÕt 57: LuyÖn tËp H 9$3G A45*';<=Pt«lªmª HH**'A$:G Pd GAlªcxan®ria &>$*U* *'/ =2Alªcxan®ria>$W"' \$dJ- F<="' 8'!J?H "LH P/F\b $W4*e>P-<="' 8'(!*`3H P^G \/ ¬>AH\ L'/:¬>-@ dH! J3RT)=fE$)/¬>> 4:e2 !!dH b$WW(!!J 1$<=-gL>Nh÷ng nguyªn lý-W(!3c>b&>F(`(h=!"& 6J(F7=/8'Hdi-W(!45>'2jkI C'7*8!`\'©'/ "c>>! E3$W(2!=l$*8S' - 67=/// ¬clit!JRT)=?)/¬>(" `Aten $W#C\3**9$3R T)=-`\<="' 8'!J**9 e(m ?H / TiÕt 58: LuyÖn tËpTiÕt 57: LuyÖn tËp