Question

cho \(y=\frac{10^{11}-1}{10^{12}-1}\)  

\(B=\frac{10^{10+}1}{10^{11}+1}\)

Answer 1

(Nếu có so sánh thì mih so sánh dùm cầu luôn nhé)

B/A =[(10^10+1)/(10^11+1)]/[(10^11-1)/(10^12-1)]

=[(10^12-1).(10^10+1)]/[(10^11-1).(10^11+1)]

=[(10^22-1)+(10^12-10^10)]/(10^22-1)

=1+(10^12-10^10)/(10^22-1)>1

=>           B > A

Answer 2

thien ty tfboys làm đúng rồi bạn ạ