Question

tính nhanh:

(2³.9⁴+9³.45):(9².10-9²)

giải ra dùm mình nhé

Answer 1

https://hoc24.vn/hoi-dap/question/138058.html

Answer 2

`(2<sup>3</sup>. 9<sup>4</sup>+9<sup>3</sup>. 45):(9<sup>2</sup>.10-9<sup>2</sup>)`

`=(2<sup>3</sup>. 9<sup>4</sup>+5 . 9<sup>4</sup>):(81 .10-81)`

`=[9<sup>4</sup>. (8+5)]:(810-81)`

`=(6561 . 13):729`

`=85296:729`

`=117`

Answer 3

$(2³.9⁴+9³.45):(9².10-9²)$

$=(2³.9⁴+5.9⁴):(81.10-81)$

$=[9⁴.(8+5)]:(810-81)$

$=(6561.13):729$

$=85296:729$

$=117$