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2x.162 = 1024
=> 2x.(24)2 = 210
=> 2x + 4.2 = 10
=> x + 8 = 10
=> x = 2
vậy_
64.4x = 168
=> 43.4x = (42)8
=> 43 + x = 416
=> 3 + x = 16
=> x = 13
vậy_
2x = 16
=> 2x = 24
=> x = 4
vậy_
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a ) 16x : 4x = 16
(16:4)x=16
4x=42 hoặc (-4)2
Vậy x=2
b) ( 2x + 1 )3 = -64
( 2x + 1 )3 = (-4)3
2x+1=-4
2x=-5
x=\(-\frac{5}{2}\)
Vậy x=\(-\frac{5}{2}\)
c ) ( 3x - 1 )2 = 16
( 3x - 1 )2 = 42=(-4)2
Suy ra:3x-1=4;3x=5;x=\(\frac{5}{3}\)
3x-1=-4;3x=-3;x=-1
Vậy x=-1;\(\frac{5}{3}\)
d ) 9x+1 = 32
9x+1 = 91
x+1=1
x=0
Vậy x=0
a) 16x : 4x = 16
=> ( 16 : 4 )x = 16
=> 4x = 16
<=> 4x = 42
=> x = 2
b) ( 2x + 1 ) 3 = -64
=> ( 2x + 1 )3 = ( -4 )3
=> 2x + 1 = -4
=> 2x = -4 - 1
=> 2x = -5
=> x = \(-\frac{5}{2}\)
c) ( 3x - 1 )2 = 16
\(\Rightarrow\begin{cases}\left(3x-1\right)^2=4^2\\\left(3x-1\right)^2=\left(-4\right)^2\end{cases}\)\(\Rightarrow\begin{cases}3x-1=4\\3x-1=-4\end{cases}\)\(\Rightarrow\begin{cases}x=\frac{5}{3}\\x=-1\end{cases}\)
d) 9x+1 = 32
=> (32 ) x+1 = 32
=> 32.(x+1) = 32
=> 2(x + 1 ) = 2
=> x + 1 = 1
=> x = 0
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(-2)3 . (-2)4 . 16 = (-2)18+x
(-2)3 . (-2)4 . (-2)4 = (-2)18+x
(-2)11 = (-2)18+x
=> 18 + x = 11 => x = 11 - 18 = -7
(-2)3.(-2)4.16 =(-2)18+x
(-2)3.(-2)4.(-2)4=(-2)18+x
(-2)11 = (-2)18+x
=>18+x=11=.x=11-18=-7
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b, 2x = 42x45 /8
2x = 16x45 /8
2x = 2x45
2x = 2x(22)5
2x = 2x210
2x = 211
=> x = 11
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(3x-2)3:4=16
(3x-2)3 =16.4
(3x-2)3 =64
(3x-2)3 =43
3x-2 =4
3x =4+2
3x =6
x =6:3
x =2
512+3(23+22.x)=572
512+3(8+4.x)=572
3(8+4.x)=572-512
3(8+4.x)=60
8+4.x =60:3
8+4.x=20
4.x=20-8
4.x=12
x=12:4
x=3
tich dung cho minh nhe
(3x-2)^3:4=16
(3x-2)^3=16.4=64=4^3
=>3x-2=4
vậy x=2
512+3(2^3+2^2.x)=572
2^3+2^2.x=(572-512):3=20
8+4.x=20
4.x=20-8=12
x=12:4=3
vậy x=3
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a. 3.x+7=25
<=> 3x = 18
<=> x = 6
b. (5.x+4)-1=23
<=> 5x + 4 = 24
<=> 5x = 20
<=> x = 4
c. 96-3(x+1)=42
<=> 3(x + 1) = 54
<=> x + 1 = 18
<=> x = 17
d. 2x=16
<=> 2x = 24
<=> x = 4
e. x2=16
<=> \(\orbr{\begin{cases}x^2=4^2\\x^2=\left(-4\right)^2\end{cases}}\)
<=> x = \(\pm\)4
2x=16
suy ra 2x=2 mũ 4
suy ra x=4
thông cảm nhé
2x=16
2x=24
x=4
Vay x=4