TLBG DA de luyen doc hieu so 2

... spend C go D spare 20 A fare B expense C cost D money 21 A give B pay C afford D have 22 A decision B mind C own D head 23 A done B cheap C for D worth 24 A way B road C time D cut 25 A main road ... nguyenlanhuong Page 7/16 /20 11 Exercises th 12 form De on luyen so 30 75 It 's a pity that you didn't tell us about this A I wish you have told us about this B I wish you had told us abou...

Ngày tải lên: 25/07/2014, 20:20

Ngày tải lên: 30/07/2015, 20:30

Ngày tải lên: 30/07/2015, 20:30

... 23 + 23 x (3 x 2) (3 x + 2) + : 2+ 3 x 2+ 3 x x x (3 x + 2) A = x + x = x Câu : ( điểm) a- / = ( m + 1) 4m + m = 2m 2m + = 2( m + ) + > 0m b- M2=(x1-x2 )2= ( x1+x2 )2- 4x1.x2=4(m+1 )2- 4(4m-m2)=4m2+8m+4-16m+4m2 ... 2( x2+y2)-8 4x+4y+4xy-8= 32- 8 =24 Vậy 3P 24 P Giá trị nhỏ P=8 x=y =2 Cách 2: 3P-4(x+y+xy)= 3x2+3y2-4x-4y-4xy=(x -2) 2+(y -2) 2 +2( x-y )2- 8 3P 32 3P 24 P Hay 16 Bộ...

Ngày tải lên: 20/09/2013, 14:10

... + y + 12 ) dy ⎡ ⎤ = π ⎢ − y + y − y + 12 y ⎥ ⎣ ⎦ 1 117 π = Câu x x x 3.x Ta chứng minh = ≥ − x2 y + z − x2 Thật áp dụng bất đẳng thức Cauchy cho số ta có ⎛ 2x2 + − x2 + − x2 ⎞ 2 2 2 x (1 − x ... thức QUANG MINH 423 /27 /15 , Lạc Long Quân, P.5, Q .11 x −∞ g′( x ) +∞ 1 / − − −∞ +∞ g ( x) 21 / 2 Do (*) có nghiệm thuộc [ 2; +∞ ) a ≥ Vậy điều kiện a để hệ có nghiệm là: a ≥ 21 21 H...

Ngày tải lên: 06/11/2013, 20:15

... TO YOU ! 47 Ơn Thi Tốt Nghiệp THPT năm 20 10 - THERE IS A WILL - THERE IS A WAY! Đề 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 ... of D with 20 .Mr Brown has many patients he is always busy A too/that B very/until C such/that D so/that 22 Ơn Thi Tốt Nghiệp THPT năm 20 10 - THERE IS A WILL - THERE IS A W...

Ngày tải lên: 08/07/2014, 03:00

... LuyÖn thi HSG 20 07- KiÒu TÝnh LuyÖn thi HSG 20 07- KiÒu TÝnh ... to the original sentences "This picture is really nice", said my uncle  My uncle said Barbara is the best tennis player in the club LuyÖn thi HSG 20 07- KiÒu TÝnh  No one ... LuyÖn thi HSG 20 07- KiÒu TÝnh

Ngày tải lên: 27/07/2014, 10:20

... and circle the word in each group that has the underlined part pronounced differently from the rest (1pt) A polite B litter C decide D crier A developed B watched C walked D posted A please B ... he drives dangerously He …………………………………………… He made me stay outside yesterday I ………………………………………… VII Put the verbs in the correct form of verb (2 pts) Last year we (install)…………… ordinary light ... p...

Ngày tải lên: 03/02/2015, 23:00

... Tựng x + (1 - x ) + (1 - x ) 2 x (1 - x )2 x (1 - x )2 Ê 3 x 3 x 3 2 x (1 - x ) Ê x x 2 3 - x2 y + z2 y ã Tng t ta cú: z2 + x x ã T (1), (2) , (3) ị y + z2 + 3 y z (2) , y z2 + x + z x2 ... nờn II1 = R + R1, II2 = R + R2 ị II1 R1 = II2 R2 (a - 3 )2 + (a + 3 )2 - 2 = (a - 5 )2 + (a + 5 )2 - a = ị I(0; 1), R = ị Phng trỡnh (C): x + ( y + 1 )2 = r r r r 2) Gi ud , uD , nP ln lt l...

Ngày tải lên: 29/06/2015, 00:00

Ngày tải lên: 30/07/2015, 18:30

Ngày tải lên: 30/07/2015, 18:30

... companion All this, perhaps, at the computer from the corner of their home: no (11) _ to catch the bus to college, or a plane to England Exciting? Certainly, and an interesting ( 12) to traditional ... always lead language learners to (15) at least a little of their time with real people 10 11 12 13 14 15 A with A concern A still A more A place A take A although A force A so A with A role...

Ngày tải lên: 31/07/2015, 08:08

... ON THI CHUNG CHI B D only by hill walkers Of all the railway routes in Britain the one which passes

Ngày tải lên: 31/07/2015, 08:08