\(\frac{2x-1}{2}=\frac{4}{\left(2x-1\right)^2}\Leftrightarrow2x-1.\left(2x-1\right)^2=2.4\Leftrightarrow\left(2x-1\right)^3=8\)
\(\Rightarrow\left(2x-1\right)^3=2^3\Rightarrow2x-1=2\Rightarrow2x=2+1=3\Rightarrow x=\frac{3}{2}\)
rut gon (2x-1)
ta duoc:1/2=4/(2x-1)
2x-1=8
x=9/2
=) (2x-1)(2x-1)^2=4*2
(2x-1)^3=8
(2x-1)^3=2^3
=)2x-1=2
2x=3
x=3/2
duyet nha
Theo đầu bài ta có:
2x - 1/2 = 4/( 2x - 1 )2
=> ( 2x - 1 )3 = 8
=> 2x - 1 = 2
=> 2x = 3
=> x = 3/2