UBND rixH nAc r-txt-t DE KIEM TRA DINII Xi, ;-An t
so c@ ritO Nim hgc zor4 -zatr
N[6n: Tofn - Ld'p 5
flicti gran lam ht)i, 90 phir lkhong k0 rhoi gian giao tlii
CAu 1, (2,0 iti1m\
Ihuc hiQn c6c ph6p tfnh sau:
l) 21 .17 +24-2'7 - 2t:
.l) ls. l0l - 2'. l0 t' :
Ciu2. (2,5 d!€rn)
'Iinr x bi6t;
1) 6,x-5: 19 U 3x+2:20+ (.-',.2);
3) i2x-33--32.3': 4) (rr-1) r(xr-2)+ +(x+1C0)=5750.
Ci!3. (1,5 iti1m\
Hu<rng irng phong trdo xiiy Cung tluong hqc tiiAn thi6n hoc sinlr tich cuc. Lop 64 t6 chirc
tro choi dAn gian, sd hqc sinh c[ra lop cltrgc ehia rhAnir nhiAu ddi choi. s6 nani i,,ri s6 n[ cu.a 1trp
duo'c chia dAu vdo trong ciie doi l{di chia drroc nhieli nhit la bao nhioLr drii. Ri€r ring lcp 64 co 2zi
nt vd [8 narn,
CAu 4.,(3,0 fiAmt
l'r0n tia Ox liy hai di6rn A l,ii B sao clio OB :4cur. ()r\ - 8cni.
l) Tinh d6 dai doan AB"
?) Di6m B co la trunq cJi0nr cua ctoan CA kh6ng? Vi saol,
3) vd di6rrr K thuQc tia cl5i cua tia RA sao ciro BK = 4fl . T'inh ,tK.
2
Qfu 5. (1,0 di€mr
Cho 20 di6m, troug dir r:o a cti6m thing irdng. (lri 2 i1i0m, ta v0 tndt driirpg thiing. Tip a. bi6t
rang ve duoc t6t cit 110 clircviig lirlng tu 20 clic.nr di ctru.
HET
(Di girn co 0I trang)
l-h[ sinh khbn.q durtc' st1 d4ng tdi li€.n. Giarn thi khong giiri thicl,t 51i thant.
2) (-i2.1 + (- e) + 121 + i-zo ,
1) ;t4:{z[lr,* (+'- r,)]]
[{9 r,i t6n thi sinh:....,.. ...: S0 bio dan}r