=16.5-[131-9^2]=80-[131-81]=80-50=30 k nha bạn!

\(2^4.5-\left[131-\left(13-4\right)^2\right]=16.5-\left[131-9^2\right]=16.5-\left[131-81\right]=80-50=30\)

2⁴.5-[131-(13-4)²]

=16.5-[131-9²]

=80-(131-81)

=80-50=30

2⁴ . 5 - [131 - (13-4)² ]

= 2⁴ . 5 - [131 - 9² ]

= 2⁴ . 5 - 50

=80 - 50

= 30

=30 ai ra ket qua the la dung zui

=80-131+81+1

=31

=80-131+81+1

=31

2⁴.5- [ 131 - ( 13- 4)²]  + 2021⁰= 16.5 - [ 131 - 9² ] + 1 = 80 - 50 +1 = 31 

\(2^4.5-\left[131-\left(13-4\right)^2\right]\)

\(=16.5-\left(131-9^2\right)\)

\(=80-50\)

\(=30\)

Bài 9,

6²x73+36x3³=36x73+36x27=36(73+27)=36x100=3600.

197-\([\)6x(5-1)²+2022⁰\(]\):5=197-\([\)6x16+1\(]\):5=197-97:5=197-97/5=888/5.

Bài 10,

21-4x=13

=>4x=21-13=8

=>x=8:4=2.

30:(x-3)+1=4⁵:4³=4²=16

=>30:(x-3)=16-1=15

=>x-3=30:15=2

=>x=2+3=5.

(x-1)³+5x6=38

=>(x-1)³+30=38

=>(x-1)³=38-30=8=2³

=>x-1=2

=>x=3.

   2⁵ . 5 - [ 131 - (13 - 4)² ]

= 32 . 5 - [ 131 - (13 - 4)² ]

= 32 . 5 - [ 131 -     9²     ]

= 32 . 5 - [ 131 -    81      ]

= 32 . 5 -         50

= 160    -         50

=          110

\(2^4.5-\left[131-\left(13-4\right).2\right]\)

\(=16.5-\left(131-9.2\right)\)

\(=80-\left(131-18\right)\)

\(=80-113\)

\(=-33\)

\(2^4.5-\left(131-\left(13-4\right).2\right)\)

\(=16.5-\left(131-18\right)\)

\(=80-118\)

\(=-33\)

2⁴ x 5 - [ 131 - ( 13 - 4 ) 2 ] =

= 16 x 5 - [ 131 - 9 x 2 ]

= 80 - [ 131 - 18 ]

= 80 - 113

= -33

-13.21-13.80+13

=-13.(21-80+1)

=-13.100

=-1300

-1+2-3+4-5+6-...-2021+2022

=(-1+2)+(-3+4)+...+(-2021+2022)

=1+1+1+...+1 (1011 số hạng)
=1011

-13 . 21 - 13 . 80 + 13

13 ( -21 - 80 + 1 )

13 . ( -100 )

- 1300

\(-13\cdot21-13\cdot80+13=13\left(-21-80+1\right)=13\cdot\left(-100\right)=-1300\)

=2^4.5-{131-(13-4)^2}

=80-{131-9^2}

=80-50

=30

HT

=16.5-{131-9^2}

=80-{131-81}

=80-50

=30

__HT__

Theo đề bài ta có : 

`2^4 xx 5 - {131-(13-4)^2}`

`=16 xx5 - { 131 - 9^2 }`

`= 16 xx5 -{131-81}`

`=16xx5-50`

`=80-50`

`=30`