a,2006x2005-1/2004x2006+2005             b,45x45+45x55/1+3+5+.......+19         c,7256x4375-725/3650+4375x7255

d,35x12+65x13                     g,18x123+9x4567x2+3x5310x6

a,2006x2005-1/2004x2006+2005             b,45x45+45x55/1+3+5+.......+19         c,7256x4375-725/3650+4375x7255

d,35x12+65x13                     g,18x123+9x4567x2+3x5310x6

a,2006x2005-1/2004x2006+2005             b,45x45+45x55/1+3+5+.......+19         c,7256x4375-725/3650+4375x7255

d,35x12+65x13                     g,18x123+9x4567x2+3x5310x6

a,2006x2005-1/2004x2006+2005             b,45x45+45x55/1+3+5+.......+19         c,7256x4375-725/3650+4375x7255

d,35x12+65x13                     g,18x123+9x4567x2+3x5310x6

a,

,2006x2005-1/2004x2006+2005             b,45x45+45x55/1+3+5+.......+19         c,7256x4375-725/3650+4375x7255

d,35x12+65x13                     g,18x123+9x4567x2+3x5310x6

gấp nha các bn lam giup tui cho 3 tick

a,2006x2005-1/2004x2006+2005             b,45x45+45x55/1+3+5+.......+19         c,7256x4375-725/3650+4375x7255

d,35x12+65x13                     g,18x123+9x4567x2+3x5310x6

gấp nha các bn lam giup tui cho 3 tick

(18x123+9x4567x2+3x5310x6):(1+4+7+10....+55+58-490) =?

1. Tính nhanh 

a) 2006x125+1000 phần 126x2005-888

 b) 18x123+9x4567x2+3x5310x6 phan 1+4+7+10+...+49+52+55+58-410