Question

23 - ( 12 - 4² )+ |15|

Answer 1

`23-(12-4^2 )+|15|`

`=23-(12-16)+15`

`=23-(-4)+15`

`=23+4+15`

`=42`

Answer 2

<=> 23 - 12 + 16 + 15 ( - 15 ) 

2 cái nha tại có giá trị tuyệt đối =)

\(\left\{{}\begin{matrix}23-12+16+15\\23-12+16-15\end{matrix}\right.\)

= \(\left\{{}\begin{matrix}42\\12\end{matrix}\right.\)

Answer 3

`23-(12-4^2)+|15|`

`=23-(12-16)+15`

`=24+4+15`

`= 43`

Answer 4