\ Dfr rcrAo *i.t cmffExut r,Ax e M6n thi : TOAI{ LOP 10}BA}t CO gAN tE*i glm W*, W 15& pW, klfrrre n4 t}dtgklSrffi di TRIS&!$C TIIFT LN XOAY N^lM HAC 2010 - 2{111 p * - 2x - vel*rt 16 y = (m +Zi}x - m -5 (d*), (pt H tham s6) Ch&!g minh ftigv6i mgi rr thi (d,) luOn cIt (P) tai or$t di$m cO A!* Cf,u I: A/ly'tCho prabal (P): y x2 Tim i A(d,) sit (Plt?r h$ di6m A, B cln AB = t€ Ciu II: (3 iliem) ciei b.it phuong tinh: FI>.ffiT - f cieihQphuongrinh: e CSu Itrfl=zJv [Jt +./sY =3 (v,ye R) III: (I itid;l.4Cho qb, c duong thda mifn a2+b1+c2=3 Tim gi6 tri,nhd nnit cria bi6u thrlc bt - "t P:LJzuz +l J2c2 +t Jza'+7 Ciu IV: (2 iti6m) * Cho hinh thang ABCDwdng tei A ve D, c6 AB/ICD, AB a, AD =2a vi BC = 2a& Tinh dign tich hinh thang ABCD Chfmg minh rlng mgi tam gi6c ABC, ta c6 (r' -&z1sinC = c2 sin(.2{ - Bl Ciu V: (2 iIiAfi r fiong m4t ph*ng vdi h€ to? dS Oxy, cho tlu&ngtren (C) : xt+y2+2x-8y-g=0 Vi6t phuons trinh etuang th*ng song song v$i dudrng thios d: 3x*y-2=0 vi cit du&ng tron cungi6 dei be,e it ro Jot ddy-phini O*y, cho t"* gi6c ABC bi6t hai canh c6 phuong trinh h Tr€n mAt AB:5x -Zi+6=O va AC:Ax+7y-21=0 Vi& phuong trtnh c4nh BC, biiit reng trgc t6m crla tam gi6c ABC tnrngvdi gfo tqa d0- n6t l-6l'll CAU ISOI "flrudfg DUNS Srfi froiinhdQ girols6n *2 -2x -l'-(m+2)x - m-5c+ I [r=l r # *wlr ' -(ar +4)x+ m+3 =0 l,O -ffiT-t{$ *l;: 0.5 -1, l DI( 02s Ts,#f*I oJs ;ffi;i;t#rFTt;;i ... ;(rn +2[ m+3)-m-5) -3 v6v ti4 {$) ABL' (ar* 2) e + (n+ e)' r .2, €{,o + 2} ' - t *rr 6T>ffiT-t{$ *l;: 0.5 -1, l DI( 02s Ts,#f*I oJs ;ffi;i;t#rFTt;;i r M6t khda s5 a{8fr.b,m = -T ;Jffi s;JWffi=1... 3x-l-I-4r[=0 =*t 4 "25 0.5 4._/in 0 .25 0.5 urxrg rg ouCIng cao tu {Ilnh U co phuong trinh 2x + 5y =0 I Sw CG5 /2- 71 r * _-J :-_1-* Phuong tti"t auffidThru Bc y = -;*" a.2s 0.2s