hay giup toi giai toan bai tim x
(4x+3) chia het (x-2)
2 + 2/3 +2/6 + 2/12+ .............+ 2/x(x + 1)= 3980/1991
2+ 2/3 + 3/6 + 2/12 +...+ 2/x(x+1) = 3980/1991
Cac ban giup toi co loi giai doi voi bai toan nay nhE
(x-3)2=25
1/3+1/6+1/10+...+2/x(x+1)=1999/2000. ; b)2+2/3+2/6+2/12+...+2/x(x+1)=3980/1991
Giup minh giai 2 bai toan lop 6 nay !
a,x+(x+1) +(x+2)+......+(x+30)=620
b,2+4+6+8+.....+2X=210
1+1/3+1/6+1/10+...+2/x.(x+1)=3980/1991
giup toi giai bai toan nay ah
3273 . 816 = ?
Giup toi giai bai toan sau :
B = 5.213.411 - 169 tất cả trên 3.234
C = 219.273 + 15.49.94 tat ca tren 68.29 + 129
