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(36 x 15 x 169):(5 x 18 x 13)
= (18 x 2 x 3 x 5 x 13 x 13):(5 x 18 x 13)
= 2x3x13x(5 x 18 x 13):(5 x 18 x 13)
= 2 x 3 x 13
= 78
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\(\left(169-4^2\right).\left(169-5^2\right)...\left(169-13^2\right)\)
Mà \(13^2=169\)
\(\Rightarrow\left(169-4^2\right)\left(169-5^2\right)...\left(169-169\right)\)
\(=\left(169-4^2\right)\left(169-5^2\right)...0\)
\(=0\)
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=(169-4^2).(169-5^20).....(169-169)
= 169-4^2).(169-5^20).......0
= 0
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(169-42).(169-52)…(169-122).(169-132)
=(169-42).(169-52)…(169-122).(169-169)
=(169-42).(169-52)…(169-122).0
=0
(169 - 4^2) . (169 - 5^2) ... (169 - 13^2)
=(169-4^2).(169-5^2)...(169-169)
=0
![](https://rs.olm.vn/images/avt/0.png?1311)
Đấm zô đúng thì biết câu trả lời của mình hay lắm đó cứ thử đi
\(=\frac{12.\left(1-\frac{1}{7}-\frac{1}{289}-\frac{1}{85}\right)}{4.\left(1-\frac{1}{7}-\frac{1}{289}-\frac{1}{85}\right)}:\frac{3.\left(1+\frac{1}{13}+\frac{1}{169}+\frac{1}{91}\right)}{7.\left(1+\frac{1}{13}+\frac{1}{169}+\frac{1}{91}\right)}\)
\(=\frac{12}{4}:\frac{3}{7}=3.\frac{7}{3}=7\)
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\(A=81.\left[\frac{12-\frac{12}{7}-\frac{12}{289}-\frac{12}{85}}{4-\frac{4}{7}-\frac{4}{289}-\frac{4}{85}}:\frac{5+\frac{5}{13}+\frac{5}{169}+\frac{5}{91}}{6+\frac{6}{13}+\frac{6}{169}+\frac{6}{91}}\right].\frac{158158158}{711711711}\)
\(A=81.\left[\frac{12.\left(1-\frac{1}{7}-\frac{1}{289}-\frac{1}{85}\right)}{4.\left(1-\frac{1}{7}-\frac{1}{289}-\frac{1}{85}\right)}:\frac{5.\left(1+\frac{1}{13}+\frac{1}{169}+\frac{1}{91}\right)}{6.\left(1+\frac{1}{13}+\frac{1}{169}+\frac{1}{91}\right)}\right].\frac{158}{711}\)
\(A=81.\left(\frac{12}{4}:\frac{5}{6}\right).\frac{2}{9}\)
\(A=81.3.\frac{6}{5}.\frac{2}{9}\)
\(A=\frac{324}{5}\)
Nhớ là: THANKS YOU VERY "MUCH" chứ không phải là THANKS YOU VERY "MATH"!!!
\(A=81.\frac{158158158}{711711711}.\frac{12.\left(\frac{1}{7}-\frac{1}{289}-\frac{1}{85}\right)}{4.\left(\frac{1}{7}-\frac{1}{289}-\frac{1}{85}\right)}:\frac{5.\left(\frac{1}{13}+\frac{1}{169}+\frac{1}{91}\right)}{6.\left(\frac{1}{13}+\frac{1}{169}+\frac{1}{91}\right)}\)
\(=81.\frac{158}{711}.\frac{12}{4}:\frac{5}{6}=\frac{1422}{79}.3.\frac{6}{5}=\frac{1422.3.6}{79.5}=\frac{25596}{395}\)
169 : 13 = 13
=> 13.13= 169
=> 169=132
Vẫn không hiểu cái của bạn cho lắm ^^ Chứng minh nha
169 : 13 = 13
=> (13)2 = 13 x 13
=> (13)2 = 13 x 13 = 169.