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a. 82. 324 = 26. 220 = 226
b. 273. 94. 243 = 39. 38. 35 = 322
c. 5 .125 . 625 = 5 . 53. 54 = 58
d.10 . 100 . 1000 = 10 . 102. 103 = 106
e. 84. 165. 32 = 212. 220. 25 = 237
f. 274 . 8110 = 312. 340 = 352
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a: \(A=8^2\cdot32^4=2^6\cdot2^{20}=2^{26}\)
b: \(B=27^3\cdot9^4\cdot243=3^9\cdot3^8\cdot3^5=3^{22}\)
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\(\begin{array}{l}{3^3}{.3^4} = {3^{3 + 4}} = {3^7};\\{10^4}{.10^3} = 10^{4+3}= {10^7};\\{x^2}.{x^5} = x^{2+5} = {x^7}.\end{array}\
![](https://rs.olm.vn/images/avt/0.png?1311)
\(B=27^3.9^4.243\)
\(=\left(3^3\right)^3.\left(3^2\right)^4.3^5\)
\(=3^9.3^8.3^5\)
\(=3^{22}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(A=8^2.32^4=2^6.2^{20}=2^{26}\)
\(\Rightarrow2^{26}\)
\(B=27^3.9^4.243=3^9.3^8.3^5=3^{22}\)
\(\Rightarrow3^{22}\)
TL
a . x ∈ ∅ b . x=-10, x=-5177/5000, x=-10173/10000.
HT
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( - 5 ). ( - 5 ) . ( - 5 ) . ( - 5 ). ( - 5 ) = ( - 5 )5 = - 3125
\(27^3.9^4.243=\left(3^3\right)^3.\left(3^2\right)^4.3^5=3^9.3^8.3^5=3^{22}\)
nhớ tick