Normal
lan luot goi cac so la u1, u2, u3, u4, u5, u6, u7ta co u1= 1/9; u7= 3vay u7= u1. q^6; thay so vao tim dc qviet 5 so do raco j ko hieu thi hoi lai ha'
lan luot goi cac so la u1, u2, u3, u4, u5, u6, u7
ta co u1= 1/9; u7= 3
vay u7= u1. q^6; thay so vao tim dc q
viet 5 so do ra
co j ko hieu thi hoi lai ha'
