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\(5x-205=2^4.4\)
\(\Leftrightarrow5x-205=64\)
\(\Leftrightarrow5x=269\)
\(x=\frac{269}{5}\)
\(5x-205=2^4.4\)
\(5x-205=64\)
\(5x=64+205\)
\(5x=269\)
\(x=269:5\)
\(x=53.8\)
~ PTHN~
\(205\left[1200-\left(4^2-2.3\right)^3\right]:40\)
\(=205\left[1200-\left(16-6\right)^3\right]:40\)
\(=205\left[1200-10^3\right]:40\)
\(=205\left[1200-1000\right]:40\)
\(=205.200:40\)
\(=205.5\)
\(=1025\)
Ủng hộ nha
205[1200-(42-2.3)3]:40
=205[1200-103]:40
=205.200:40
=1025
= 205 - [(1200 - (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
Ta có \(A=4^{2005}-4^{205}\)
\(=\left(...4\right)-\left(...4\right)\)
\(=\left(...0\right)⋮10\)
\(\Rightarrow\frac{A}{10}\in Z\)
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
a)5x -201 = 24.4
=> 5x - 201 = 16.4
=> 5x - 201= 64
=> 5x= 64+ 201
=> 5x= 265
=> x= 265:5
=> x= 53
b) 20+ 5x= 55:53
=>20+5x= 55:53
=>20+5x=55-3
=>20+5x=52
=>20+5x=25
=>5x=25-20
=>5x=5
=>x=5:5
=>x=1
\(5x-201=2^4.4\)
\(\Leftrightarrow5x-201=2^4.2^2\)
\(\Leftrightarrow5x-201=2^6\)
\(\Leftrightarrow5x-201=64\)
\(\Leftrightarrow5x=265\)
\(\Leftrightarrow x=53\)
sau 58 ,7,50 ,2,-60 là phép tính khác .
mấy b giúp mk nha ?
\(5x-205=2^4.4\)
\(\Rightarrow5x-205=16.4=64\)
\(\Rightarrow5x=64+205=269\)
\(\Rightarrow x=\frac{269}{5}\)