Ta có:\(A=\frac{10^8+2}{10^8-1}\)
\(\Rightarrow A=\frac{10^8-1+3}{10^8-1}=\frac{10^8-1}{10^8-1}+\frac{3}{10^8-1}=1+\frac{3}{10^8-1}\)
Ta có:\(B=\frac{10^8}{10^8-3}\)
\(\Rightarrow B=\frac{10^8-3+3}{10^8-3}=\frac{10^8-3}{10^8-3}+\frac{3}{10^8-3}=1+\frac{3}{10^8-3}\)
Vì \(\frac{3}{10^8-1}
So sánh A và B:
A=10^8+2/10^8-1
B=10^8/10^8-3
So sánh \(A=\frac{10^8+2}{10^8+1};B=\frac{10^8}{10^8-3}\)
A=108+2 trên 108-1 B=108 trên 108-3
So sánh A và B
Chung minh rang
A) 2^10+2^11+2^12 chia cho 7la mot so tu nhien
B) 8^10-8^9-8^8 chia cho 55 la mot so tu nhien
Tính:
a) -5/7(14/5 - 7/10) : |-2/3| - 3/4(8/9 + 16/3) + 10/3(1/3 + 1/5)
b) 17/-26(1/6 - 5/3) : 17/13 - 20/3(2/5 - 1/4) + 2/3(6/5 - 9/2)
c) -8/9(9/8 - 3/2) + 5/4 : (5/2 - 15/4) - 3/4(10/9 - 8/3) : (-1/3)
d) 21/10 : (12/5 - 9/10) . (-4/7) - 3/2(1/6 - 7/12) + 1/5(3/2 - 1/4)
5^2×6^9×10+6^5×2^3×153/5^2×6^8×10-2×6^8×103
Rút gọn: 5^2*6^9*10+6^5*2^3*15^3/5^2*6^8*10-2*6^8*10^3
Giúp e vs e đang cần gấp :))
Cho \(S=\frac{3}{2}+\frac{4}{3}+\frac{5}{4}+\frac{6}{5}+\frac{7}{6}+\frac{8}{7}+\frac{9}{8}+\frac{10}{9}+\frac{11}{10}+\frac{12}{11}\)
So sánh S với 10
