(Solved): Exercise. Select all that are correct. \[ \begin{array}{l} \frac{4 x^{2}-2 x}{3 x}=\frac{x(4 x-2)}{ ...

Exercise. Select all that are correct. \[ \begin{array}{l} \frac{4 x^{2}-2 x}{3 x}=\frac{x(4 x-2)}{3 x}=\frac{4 x-2}{3} \\ \frac{2 x}{1+x^{2}}=\frac{2 x}{1}+\frac{2 x}{x^{2}}=2 x+\frac{2}{x} \\ (x-1)^{3}=x^{3}-1 \\ \frac{1}{5 x}=5 x^{-1} \\ (2 x)^{3}=2^{3} x^{3}=8 x^{3} \\ 2^{3+2 k}=2^{3}+2^{2 k} \end{array} \]