Cho A=(\(\frac{1}{4}\)-1).(\(\frac{1}{9}\)-1).(\(\frac{1}{16}\)-1).....(\(\frac{1}{400}\)-1)
So sánh A với \(\frac{-1}{2}\)
1 câu trả lời
ban co the sao chep roi hoi cung duoc ma co gang len nhat ban se lam duoc bai nay va ca nhung bai cau ko hieu moi ngoui dau phai cai gi cung co the biet het dau, co gang len nhe Hai Anh
