Question

Bài 1:

3² - 5 [ 3 ( 4 - 1 ) - 8 ]

Answer 1

`3^{2}-5.[3.(4-1)-8]`

`=3.3-5.(3.3-8)`

`=9-5.(9-8)`

`=9-5.1`

`=9-5=4`

Answer 2

\(3^2-5.\left[3.\left(4-1\right)-8\right]=9-5.\left(3.3-8\right)=9-5.\left(9-8\right)=9-5.1=9-5=4\)

Answer 3

3² - 5 [ 3 ( 4 - 1 ) - 8 ]

=9-5[3.3-8]

=9-5.1

=9-5

=4