\(\Rightarrow\)\(\left(\frac{1}{2}\right)^{2x-1}=\)\(\left(\frac{1}{2}\right)^3\)
\(\Rightarrow2x-1=3\)
\(2x=3+1\)
\(2x=4\)
\(x=4:2=2\)
( 1/2 ) 2x -1= ( 1/2 ) 3
2x - 1 =3
2x = 3+1
2x=4
x= 4:2 = 2
x = 2
nha , học tốt
\(\text{Ta có : }\left(\frac{1}{2}\right)^{2x-1}=\frac{1}{8}\)
\(\Rightarrow\left(\frac{1}{2}\right)^{2x-1}=\left(\frac{1}{2}\right)^3\)
=> 2x - 1 = 3
=> 2x = 4
=> x = 2
\(\left(\frac{1}{2}\right)^{2x-1}=\frac{1}{8}\)
\(\left(\frac{1}{2}\right)^{2x-1}=\left(\frac{1}{2}\right)^3\)
=> 2x -1 =3
=> 2x = 4
x= 2
vậy x=2