(2x+1)2=252
2x+1=25
2x=25-1=24
x=12
t*** mình nhé
\(\left(2x+1\right)^2=625\)
\(\Rightarrow\orbr{\begin{cases}2x+1=25\\2x+1=-25\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}2x=24\\2x=-26\end{cases}}\Rightarrow\orbr{\begin{cases}x=12\\x=-13\end{cases}}\)
(2x+1)^2=625
(2x+1)^2=25^2
2x+1=25
2x=25-1
2x=24
x=24:2
x=12
Vậy x=12
\(\Leftrightarrow\)(2X+1)=-125 hoặc 125
(2X+1)=125
2X=125-1
2X=124
X=124:2
X=62
(2X+1)=-125
2X=(-125)-1
2X=-126
X=(-126):2
X=-63
(2X+1)2=625
=> 2X+1=25 HOẶC 2X+1=-25
=> 2X=24 2X=-26
=> X=12 X=-13
( 2x + 1 )2 = 625
=> ( 2x + 1 )2 = 252
=> 2x + 1 = 25
=> 2x = 25 - 1
=> 2x = 14
=> x = 14 : 2
=> x = 7
( 2x + 1 ) 2 = 625
\(\Rightarrow2x+1=25\)
\(\Rightarrow2x=24\)
\(\Rightarrow x=12\)
Hoặc \(2x+1=25\)
\(2x=-16\)
\(x=-13\)