Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(24^{54}\cdot54^{24}\cdot2^{10}\)
\(=2^{162}\cdot3^{54}\cdot3^{72}\cdot2^{24}\cdot2^{10}\)
\(=2^{196}\cdot3^{126}\)
c: \(81^7-27^9-9^{13}\)
\(=3^{28}-3^{27}-3^{26}\)
\(=3^{26}\left(3^2-3-1\right)\)
\(=3^{24}\cdot45⋮45\)
Ta có: 76 + 75 - 74
= 74 . (49+7-1)
= 74 . 55 chia hết cho 11 => ĐPCM
Ta có: 2454⋅5424⋅210
= (23 . 3)54 . (33 . 2) . 210
= 2162 . 354 . 372. 224 . 210
= 2196 . 3126
= (2189 . 3126). 27
=7263 . 27 chia hết cho 63 => ĐPCM
\(24^{54}.54^{24}.2^{10}=\left(2^3\right)^{54}.3^{54}.2^{24}.\left(3^3\right)^{24}.2^{10}=2^{196}.3^{126}=2^7.2^{189}.\left(3^2\right)^{63}\)
\(=2^7.\left(2^3\right)^{63}.9^{63}=2^7.8^{63}.9^{63}=2^7.72^{63}\) chia hết cho \(72^{63}\)
\(24^{54}.54^{24}.2^{10}\)
\(=\left(2^3.3\right)^{54}.\left(3^3.2\right)^{24}.2^{10}\)
\(=\left(2^3\right)^{54}.3^{54}.\left(3^3\right)^{24}.2^{24}.2^{10}\)
\(=2^{162}.3^{54}.3^{72}.2^{24}.2^{10}\)
\(=2^{196}.3^{126}\)
Lại có :
\(72^{63}=\left(2^3.3^2\right)^{63}\)
\(=\left(2^3\right)^{63}.\left(3^2\right)^{63}\)
\(=2^{189}.3^{126}\)
Vì \(2^{196}.3^{126}⋮2^{189}.3^{126}\Leftrightarrowđpcm\)