2^4 . 5 - [ 131 - ( 13 - 4 ) ^2 ] + 2022^0
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(2^4.5-\left[131-\left(13-4\right)^2\right]=16.5-\left[131-9^2\right]=16.5-\left[131-81\right]=80-50=30\)
![](https://rs.olm.vn/images/avt/0.png?1311)
24 . 5 - [131 - (13-4)2 ]
= 24 . 5 - [131 - 92 ]
= 24 . 5 - 50
=80 - 50
= 30
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(2^4.5-\left[131-\left(13-4\right)^2\right]\)
\(=16.5-\left(131-9^2\right)\)
\(=80-50\)
\(=30\)
![](https://rs.olm.vn/images/avt/0.png?1311)
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.
![](https://rs.olm.vn/images/avt/0.png?1311)
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
![](https://rs.olm.vn/images/avt/0.png?1311)
\(2^4.5-\left[131-\left(13-4\right).2\right]\)
\(=16.5-\left(131-9.2\right)\)
\(=80-\left(131-18\right)\)
\(=80-113\)
\(=-33\)
\(2^4.5-\left(131-\left(13-4\right).2\right)\)
\(=16.5-\left(131-18\right)\)
\(=80-118\)
\(=-33\)
![](https://rs.olm.vn/images/avt/0.png?1311)
-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
![](https://rs.olm.vn/images/avt/0.png?1311)
\(2^4.5-\left[131-\left(13-4\right)^2\right]+2020^0\)
\(=16.9-\left[131-9^2\right]+1\)
\(=90-\left(131-81\right)+1\)
\(=91-50=41\)