Question

So sánh 72^45-72^44va72^44-72^43

Answer 1

Ta có :

\(72^{45}-72^{44}=72^{44}\left(72-1\right)=7^{44}.71\)

\(72^{44}-72^{43}=72^{43}\left(72-1\right)=72^{43}.71\)

Vì \(72^{44}.71>7^{43}.71\)

\(\Rightarrow72^{45}-72^{44}>72^{44}-72^{43}\)

Answer 2

72^45 - 72^44 = 72^44 ( 72 - 1 ) = 72^44 . 71

72^44 - 72^43 = 72^43 ( 72 - 1 ) = 72^43 . 71

Vì 44 > 43 nên 72^44 . 71 > 72^43 . 71 hay 72^45 - 72^44 > 72^44 - 72^43

Answer 3

cậu học trường nào vậy

Answer 4

Ta co

7245−7244=7244(72−1)=744.71

7244−7243=7243(72−1)=7243.71

Vì 7244.71>743.71