Ta có: \(^{\left(2x+1\right)^3=125}\)
=> \(\left(2x+1\right)^3=5^3\)(vì \(5^3\)= 125)
=> 2x+1 = 5
=> 2x = 5-1 = 4
=> x = 4:2
=>x = 2
Vậy x = 2
\(\left(2x+1\right)^3=125\)
\(\left(2x+1\right)^3=5^3\)
\(\Rightarrow2x+1=5\)
\(\Rightarrow2x=4\)
\(\Rightarrow2\)
[2x+1]3=125
<=>[2x+1]3
<=>2x+1=5
<=>2x=4
<=>x = 2
\(\left(2x+1\right)^3=125\)
\(\left(2x+1\right)^3=5^3\)
2x+1=5
2x=5-1
2x=4
x=4:2
x=2
vậy \(x=2\)