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Tài liệu bồi dỡng HS giỏi môn giải toán trên MTCT lớp 8,9 ở trờng THCS Bỡnh Khng B Sn, Q ngói Đặt vấn đề Trong thời đại hiện nay, máy tính điện tử chiếm một vị trí hết sức quan trọng trong đời sống cũng nh học tập, giảng dạy. Học sinh có hứng thú và quen dùng máy tính trong tính toán, các em tỏ ra rất nhanh nhạy khi tiếp xúc, tiếp thu các kiến thức về máy tính cầm tay, máy vi tính. !"#$%&'( )%& *)+,-.*/012%3* 3.4567899:-48;9:-.< +<=2>.?34@A/01 '#0B-CD :B-CD !".#$%&'( )%& *)E+,-.*/012 %3*3.4B-CD56899:-4568;9:-. < FG2H0I/01'#J.43 ,G."K.*LMN#)' )O)N#42.P)Q?'?3RM#+ % *,-Q"3)G3#M))4 3LMAS?'H'<H)T2 (3.@$Q< !"$"0<H)U0Q40VW,-X4YZ %)#=S2([)2N))#'$" ) *.4\Q"#2P)(A(' L2HQ<4'H%<(@4[23)4 []+,-.G0P)#% +@62([0P)*QQ4^3RM# +% Ung vn Dng T :0979203444 Tµi liÖu båi dìng HS giái m«n gi¶i to¸n trªn MTCT líp 8,9 ë trêng THCS Bình Khương B Sơn, Q ngãi Chuyên đề 1: BÀI TOÁN ĐA THỨC +_:-`WabBc,dc,CBB+,e5U6Z,DF,f+,eU6Zg6h Phương pháp: 7@2> 7i)01=V]j 7i)01-Nk,] 1) Định nghĩa phép chia hết- Chia có dư của 2 đa thức f(x) và g(x); 5U6ZlU6Z"k$U6Z'U6Z5U6ZgU6Z $U6ZhU6Z FU6Zg9"5U6ZU6Z 2) Định lí Bezoul: X#/L5U6ZLA6' ∈ m*LA5U6Z n6g"2([3o5UZ =A5U6Z F5UZg9"5U6Z.6g =V]jl 7W2)O)L5U6Z=LU6Zg6p[5UZ VD1l5U6Zg6 q hr6 s 78U6Zg6pt +.[025UtZgt q hr t s p8g9 VD2:5U6Zg6 8 hs6 q p6hrU6Zg6ht +.[025U7tZgU7tZ 8 hs U7tZ q pU7tZhrgs 7W2)O)L5U6Z=LU6Zg6h[5 b a − ÷ VD3:5U6Zgq6 q hs6 s h86p;U6Zgs6ht +.[02l5 q s t t t t ;8 q s 8 ; s s s s u − − − − − = + + − = ÷ ÷ ÷ ÷ VD4:5U6Zgq6 r h86 q pr6 s hs6p;U6Zgr678 +.[025 r q s 8 8 8 8 8 u; q 8 r s ; v r r r r r s8v = + − + − = ÷ ÷ ÷ ÷ ÷ qZSơ đồ Hoocne: +2>)(Lc U6Z(=L6p.*/ 01P,]2l X#/3Lc U6Zg 6 h 7t 6 7t h 7s 6 7s hYh t 6h 9 =L6p 2Lw U6Zg 7t 6 7t h 7s 6 7s hYh t 6h 9 "G[ 4 7t 4 7s 4Y4 t 4 9 ' 7t 4 7s 4 t 4 9 .[$xl 7t g 7s g 7t h 7t 9 g t h t '[02g 9 h 9 7t 7s Y t 9 7t g 7s g 7t h 7t 7q g 7s h 7s 9 g t h t g 9 h 9 Ví dụ 1:+"2N'[02AL 5U r s Z s q r 8x x x x= − + − U Z sg x x= + Giải: +l s 9 7q r 78 7s s 7r 8 7v ; !PL2Nw q s U Z s r 8 vx x x x= − + − '[02g; Ung văn Dương ĐT :0979203444 Tµi liÖu båi dìng HS giái m«n gi¶i to¸n trªn MTCT líp 8,9 ë trêng THCS Bình Khương B Sơn, Q ngãi Ví dụ 2:+"2N'[02AL r q s U (C) The man is getting into a vehicle (D) The woman is waiting or a parking spot (A) Some signs are blocking the entrance (B) A clock is hanging above a doorway (C) Some recycling bins are being emptied (D) The doors have been le open (A) �¥ Df�OI 11� l lQ i �Q (C) �¥ :H g 01 l-\' Xll lQ (D) �OI �.1 lQ (B) AIJIPf 1O (A) A man is putting away some crutches (B) wo people are looking at each other (C) A woman is monitoring a patient (D) They are entering an elevator .1� :l-l lQ 10 (A) a'f7f (B) � Af'OI J- -� !l lQ (C) ; f t: ?Al3fl �Q (D) Af'�OI 1l IOIJII �j7fl IQ 11 Which gym you use? (A) The one near my home (B) readmills mostly (C) I think it's new 11 i 12 Where will the ban uet take place? 12 l�7f iCIIIA �.ItR? 13 When will the company release its annual re ort? 13 �Af7f 111 !li� !: l of[R? 14 Where is your apartment? 14 alJ Of (A) Please make a donation (B) The Washington Ballroom (C) In the evening, at 8:00 (A) Later this week (B) We didn't e port them (C) I didn't write them (A) It's downtown (B) Three bedrooms (C) es, it is , l� O gofAItR? (A) IIA1 7fJ l (B) QPH - a l!R (C) H£g OfR (A) 71¥E� l lR (B) !�a �£i� (C) 'i9 8AI\IR (A) OI ? ll (B) -.I� !�� * of'1 J�i (C) : l7f J ii � iIII ltR? (A) AIIII W> (B) mJ 37H (C) 11, t 15 Who translated this news article? 15 r7f OI !¥ 71.f� J1 4R? 16 There's a typo in this advertisement 16 01 lII l7f liR 17 What did you like about the factory tour? 17 ;§ i %\Ii 7f �iR? (A) 11, -.I \Ii 2�7f *iR (B) J- l l\I1R (C) tfJOI O e OI O ? IR (A) From a finance maga ine (B) Yes, it's a new article (C) Kathy did that (A) Really ? Where? (B) es, it's on sale now (C) Send me 10 copies (A) Yes, everyone in our group did (B) At a clothing manufacturer (C) Our guide was very knowledgeable (A) g:1\IiR (B) 11, H£g 7IAfIIR (C) HAl7f !O (A) - ? Ill.? (B) il, '1E l fDH OIIIR (B) 'i II 10 � l lR 161 the contracts a qE j q 11 !�Sfl �E7f? (A) f�� 7J j (B) llOJ AI , ¥�1 J I J H g Sf.jl (C) � if l (D) � J l 70 aAfE 11 ¥1� W J7f? jAfE ¥1� Sf tl ofE7f? (A) JI aAf� ! I (B) le A - £ gA f71 (C) aAfI f� 1� q, (0) 11f1� of71 J tJ� 71 (B) llOJ AlI Af �JIAi �� ! (C) Af] Af¥�£ O 7f71 (0) Af]I � llll 1f � -71 (A) EIJI j f71 71-73 advertisement emove stains and odors from your furniture without hiring a professional