`=> 2x - 3 = +-6`
`=> 2x = 9` hoặc `-3`.
`=> x = 9/2` hoặc `-3/2`.
(2x - 3)2 = 36
(2x - 3)2 = 62
=> (2x - 3) = 6
2x = 6 + 3 = 9
x = 9 : 2 = \(\dfrac{9}{2}\)
`(2x - 3)^2 = 36`
`(2x-3)^2 = 6^2`
`2x - 3 = 6`
`=>` \(\left[{}\begin{matrix}2x-3=6\\2x-3=-6\end{matrix}\right.\)
`=>` \(\left[{}\begin{matrix}2x=9\\2x=-3\end{matrix}\right.\)
`=>` \(\left[{}\begin{matrix}x=9:2=\dfrac{9}{2}\\x=-3:2=-\dfrac{3}{2}\end{matrix}\right.\)
\((2x-3)^2=6^2\)
\(2x-3=6\)
\(2x=9\)
\(x=\) \(\dfrac{\text{9}}{\text{2}}\)
(2x - 3)2 = 36
=> (2x - 3) = 6
=> 2x = 6 + 3 = 9
=> x = 9 : 2 = 9/2 hay - 3/2
vậy x = [9/2 ; - 3/2]
