N
nguyenvietanh11x


Bai 1:thuc hien cac phep tinh sau mot cach hop li
d,D=1-2+2*2-2*3+2*4-2*5+...-2*2010+2*2011
Bai 2:tim x
c\ 2+4+6+...+2x=210
d,D=1-2+2*2-2*3+2*4-2*5+...-2*2010+2*2011
Bai 2:tim x
c\ 2+4+6+...+2x=210