Ta có : (2x - 1)3 = 8
=> (2x - 1)3 = 23
=> 2x - 1 = 2
=> 2x = 3
=> x = 3/2
Vậy x = 3/2
(2x-1)3 = 8
(2x-1)3 = 23
=> 2x-1 = 2
2x = 2+1
2x = 3
x = 3:2
x= 3/2
Ta có :
\(\left(2x-1\right)^3=8\)
\(\left(2x-1\right)^3=2^3\)
\(2x-1=2\)
\(2x=2+1\)
\(2x=3\)
\(\Rightarrow x=1,5\)
(2x-1³)=8
=>(2x-1)³ =2³
=>2x-1=2
=>2x=2+1
=>2x=3
=>x=3:2
=>x=\(\frac{3}{2}\)
( 2x - 13 ) = 8
=> ( 2x - 1 )3 = 23
=> 2x - 1 = 2
=> 2x = 2 + 1
=> 2x = 3
=> x = 3: 2
=> x = 3/2
(2x - 1)3 = 8
=> (2x - 1)3 = 23
=> 2x - 1 = 2
=> 2x = 3
=> x = 3/2
Vậy x = 3/2