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\(205\left[1200-\left(4^2-2.3\right)^3\right]:40\)
\(=205\left[1200-\left(16-6\right)^3\right]:40\)
\(=205\left[1200-10^3\right]:40\)
\(=205\left[1200-1000\right]:40\)
\(=205.200:40\)
\(=205.5\)
\(=1025\)
Ủng hộ nha
205[1200-(42-2.3)3]:40
=205[1200-103]:40
=205.200:40
=1025
205-[1200-(42-2.3)3]:40
=205-[1200-(16-2.3)3]:40
=205-[1200-(16-6)3]:40
=205-[1200-103]:40
=205-[1200-1000]:40
=205-200:40
=205-50
=155
Nhớ thk nha bạn
205 - [ 1200 - ( 42 - 2 . 3)3 ] : 40
= 205 - [ 1200 - 1000 ] : 40
=205 - 200 : 40
= 205 - 5
= 200
Bài làm
205 - [ 120 - ( 42 - 2 . 3 )3 ] : 40
= 205 - [ 120 - ( 14 - 1 . 3 )3 ] : 40
= 205 - [ 120 - ( 14 - 3 )3 ] : 40
= 205 - [ 120 - 113 ] : 40
= 205 - [ 120 - 1331 ] : 40
= 205 - ( -1211 ) : 40
= 205 + 1211 : 40
= 205 + 30,275
= 235,275
# Chúc bạn học tốt #
a) 205 – [1200 – (42 – 2.3)3] : 40
= 205 – [1200 – ( 16 - 6 )3 ] : 40
= 205 – [1200 – ( 10 )3 ] : 40
= 205 – [1200 – 1000 ] : 40
= 205 – 200 : 40
= 205 – 50
= 155
b) 177 :[2.(42 – 9) + 32(15 – 10)]
= 177 :[2.(16 – 9) + 9. 5]
= 177 :[2.7 + 9. 5]
= 177 :[ 14 + 45 ]
= 177 : 59
= 3
2.
a,\(50-\left[\left(50-2^3.5\right):2+3\right]\)
\(=50-\left[\left(50-40\right):2+3\right]\)
\(=50-\left(10:2+3\right)\)
\(=50-8\)
\(=42\)
b,\(8697-\left[3^7:3^5+2\left(13-3\right)\right]\)
\(=8697-\left(3^2+2.10\right)\)
\(=8697-\left(9+20\right)\)
\(=8697-29\)
\(=8668\)
c,\(205-\left[1200-\left(4^2-2.3\right)^3\right]:40\)
\(=205-200:40\)
\(=200\)
2)
a) \(50-\left[\left(50-2^3.5\right):2+3\right]\)
\(=50-\left[\left(50-8.5\right):2+3\right]\)
\(=50-\left[\left(50-40\right):2+3\right]\)
\(=50-\left(10:2+3\right)\)
\(=50-\left(5+3\right)\)
\(=50-8\)
\(=42\)
b) \(8697-\left[3^7:3^5+2\left(13-3\right)\right]\)
\(=8697-\left(3^7:3^5+2.10\right)\)
\(=8697-\left(3^{7-5}+2.10\right)\)
\(=8697-\left(3^2+2.10\right)\)
\(=8697-\left(9+2.10\right)\)
\(=8697-\left(9+20\right)\)
\(=8697-29\)
\(=8668\)
c) \(205-\left[1200-\left(4^2-2.3\right)^3\right]:40\)
\(=205-\left[1200-\left(16-2.3\right)^3\right]:40\)
\(=205-\left[1200-\left(16-6\right)^3\right]:40\)
\(=205-\left(1200-10^3\right):40\)
\(=205-\left(1200-1000\right):40\)
\(=205-200:40\)
\(=205-5\)
\(=200\)
= 205 - [(1200 - (16 - 2 . 3)3 ] : 40
= 205 - [1200 - (16 - 6)3 ] : 40
= 205 - [1200 - 103 ] : 40
= 205 - [1200 - 1000 ] : 40
= 205 - 200 : 40
= 205 - 5
= 200
Tick nha bạn
205 - [(1200 - (42 - 2 . 3)3 ] : 40
= 205 - [(1200 - (16 - 2 . 3)3 ] : 40
= 205 - [1200 - (16 - 6)3 ] : 40
= 205 - [1200 - 103 ] : 40
= 205 - [1200 - 1000 ] : 40
= 205 - 200 : 40
= 205 - 5
= 200