chung minh: 24^54 x 54^24 x 2^10 chia hết 72^63
Chứng minh rằng: 24^54 . 24^54 . 2^10 chia hết cho 72^63
2454 x 5424 x 210 chia hết cho 7263
Chứng tỏ : (2454 x 5424 x 210) chia hết cho 7263
24^54 × 54^24 × 2^10 chia hết cho 72^63
Chứng minh rằng: 2454.5424.210 chia hết cho 7263
24^54.54^24.2^10=(2^3.3)^54.(3^3.2)^24...
=(2^3)^54.3^54.(3^3)^24.2^24.2^10
= 2^162.2^24.2^10.3^54.3^72
=2^196.3^126
72^63=(2^3.3^2)^63
=(2^3)^63(.3^2)^63=2^189.3^126
vì 2^196.3^126 chia hết 2^189.3^126
=>24^54.54^24.2^10 chia hết 72^63
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chứng minh rằng
2454 x 5424x 210 chia hết cho 7263
Chứng minh rằng;
\(24^{54}.54^{24}.2^{10}\) 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 \(2^{196}.3^{126}⋮2^{189}.3^{126}\Leftrightarrowđpcm\)
24\(^{54}\) x 54\(^{24}\) x 2\(^{10}\) 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 \(2^{196}.3^{126}⋮2^{189}.3^{126}\)
\(\Leftrightarrowđpcm\)
Chứng minh rằng;
\(24^{54}.54^{24}.2^{10}\) chia hết cho \(72^{63}\)