Ngày tải lên :
28/08/2015, 15:43
... holn c6 gi6 tri bing 3,(8) 2 ,74 (8) $,.,ru,r,tr*l $tfi 0, (19) 121 1 I esoo 12 37 23 4 ,23 4 (23 4) I 0, 12( 32) 0,$ \.t \"I \&r' r 194 1 Cdc cdp ttm I, I il", I I 19 13 ,25 (3) 99 aJ2 (23 ) 1,33(3) dtw theo 90 ... ) 5: ph6p tinh (2x-s)2oos + (3y +412oto < ta ( , ; .) Chu6ng ngqi vft 6: cho hai bi6u tht?c K6t qud ndo sau *- q2 'zs2 -+ s?'12s 23 .s2 vd N= 4 924 . 125 1 28 _ 530 74 e 45 52e1 62 .74 8 diy clfng? ()n.M=N ... 3,9(4,3 + 2, 3 10,46 4, 12( 2,3 + 3 ,21 - 5,51) - ,2: (2x + 4,5) =l I (9,8 - 3 ,23 ) Tim g : 10,45 (4 ,23 + 2, 34) tri cria ?X, bi6t: ffi ':11 -t.= 10,06(1 -2, g) 13 (2, 4 - 2, 34 + 3,4' 4, 12 - 3,4.1 ,78 ) ,3.10...