\(\left(\sqrt{7}-2\right)^2=11-4\sqrt{7}\)

\(\left(3-\sqrt{7}\right)^2=16-6\sqrt{7}=11-4\sqrt{7}+5-2\sqrt{7}\)

mà \(5-2\sqrt{7}< 0\)

nên \(\sqrt{7}-2< 3-\sqrt{7}\)

a) Ta có : a + 1 > a - 1

=> \(\frac{1}{a+1}\) < \(\frac{1}{a-1}\)

a) \(\frac{1}{a+1}< \frac{1}{a}< \frac{1}{a-1}\Rightarrow\frac{1}{a+1}< \frac{1}{a-1}\)

b) \(\frac{23}{47}< \frac{23}{45}< \frac{24}{45}\Rightarrow\frac{23}{47}< \frac{24}{45}\)

c) \(\frac{12}{17}>\frac{1}{2}>\frac{7}{15}\Rightarrow\frac{12}{17}>\frac{7}{15}\)

d) \(\frac{34}{43}< \frac{35}{43}< \frac{35}{42}\Rightarrow\frac{34}{43}< \frac{35}{42}\)

Cảm ơn các bạn rất nhiều

8(%7#2;3786(23#;8%7;23#?3#](?;32%78(23;%(3*2;]34((46(;13846(1;58]63#;?%]3;?85?;3]%68%63(#8%,8632;6%]3;6?%8%,3]?8%23#;8%3#2;%68((14?+^#]?&$%3]3#;(+3]4}](#^&?+(:^?%+(},]?%]}^^?,}#]?,#6?*6*3,#3,](6,(6,3]?73%,]7?%]83#?87%3#,?7%,]?7%3#],?%+78)76}#,^*],)#+/(#})(#]}]7?3#68]7}#(])}7+)](^]74(3+)(+7/4?}(*@?/3#?7^{%79{}7^?#/})7},#(7?:%#?:%*)7#6}?/+?+(7^,;{*?%;{,?+?%^{},?+{#,/%?^&]{#,?,]{?^+3(?^&%3/?(+,3/?^%+?+^#/%3^?}%+#/%?^}?&?%}&#/,?%^+#?}/^+7(}7#+/6?)/}#+76)#/?}7+#/}??7+%/}#??{7#}+%?{,+}#^8^kết quả là *,%^*^#,#61?*%*^^?,#^?%$ chúc bạn học giỏi nhe :))) 

Bằng 5^57/7,71 cách giải 12:0,1+7/^1-729=5^57/7,71

5^57/7,71-3:3x2+2:4=5^57/7,71

Chúc bạn học giỏi nhe :)))) 👍👍👍👍👍👍👍👍👍 

Vậy thì D sẽ > 1/64 nha

Chu pa pi pồ nhà nhố.....!!!!

.................

Bằng 1%^77%/7100 vậy D sẽ > 1/64

D bé hơn hoặc lớn hơn hoặc bằng 1/64