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(1)PUBND THANH PHO TI{A NGLIYEN
PHoNG GrAo.pWJADAo rAo
rci rnr cHeN Hec srNH cror Lop e Nim \Oc20lt -2018
MON: TOAN
Thdi gian ldm bdi: 150 philt, kh6ng ke thdi gian giao di
ON CHiIqH THITC
Bei 1 @,0 di6m) Nhd 6ng An dr)ng kh6a sO AC kh6a nhd nhrmg 6ng An qu6n m6t
mOt khAu gdm ndm chfr s6 d6 mcr kh6a Ban hdy girip 6ng An tim ra mQt khAu vdi c6c di6u kiOn sau:
a Chfi s6 thir ndm c6ng cht sd thri ba bing 14;
b Chir sO eau ti6n nh6 hcrn hai lAn cht st5 th,i hai 1 dcm vi:
c Chfi sd thri tu 16n hon chfr sO tnfr hai 1 dcm vi; d Chfi s5 tnri hai c6ng cht s6 thir ba bing 10; e TOng ndm chft sO ta:0.
Biri 2 (2,0 di€m) Vitlt sO ti6p theo cria ddy s6 8179;6399;6237;2294; ?
Bii 3 (2,0 di€m) cho *=1,1i*zJs *G-2{r,Jn
Hdy tinh gi6 tri cria bi6u thuc A= ("' - x6 + t)2018
Bii 4 (j,0 di€m) Cho tam gi6c ABC vu6ng cAn c6 AB : AC :2018cm G9 D vd E
ld cilc di6m tr6n AB vd AC sao cho AD: CE Tim giStrinh6 nhdt cria DE
Bni 5 Q,0 di€m) Cho tam giSc d6u ABC c?nh bdng a, geiO lir trung di0m ctra BC
DWng g6c xOy: 600 cho Ox cit cpnh AB tai M, Oy cht cqnhAC tai N Chrmg minh:
a Tam gi6c MBO d6ng dang v6i tam gi6c OCN
b BC2 :4MB.NC.
c MO ld phAn giitc cl ;a g6c BMN.
d MN ludn tii5p xric v6i mQt duong trdn cO Ainn khi g6c xOy quay quanh O vd Ox
.at ae tai M; Oy chtAC tai N
Bni 6 (,0 diAm) 6ttg Binh l5i chi6c xe m6i cria 6ng di m6t s6 nguy6n gid v6i t6c dO 55km/h Lirc Uit eau di c6ng tcy m6t chi vdo s6 on, d6 abc ld sO
,.-c6 chir sO v6i a>I;a+b+cs7 KOt thric chuy6n di c6ng to m6t chi vdo s6 cba
Hdy tinh gi6 tri ctta a' + b2 + c2