(2x-1)^3=8 suy ra 2x-1 = 2
2x=3
x=3/2
\(\Leftrightarrow\left(2x-1\right)^3=2^3\)
\(\Rightarrow2x-1=2\)
\(\Leftrightarrow2x=1\)
\(\Leftrightarrow x=\frac{1}{2}\)
\(\Leftrightarrow\left(2x-1\right)^3=2^3\)
\(\Rightarrow2x-1=2\)
\(\Leftrightarrow2x=1\)
\(\Leftrightarrow x=0,5\)