Uprav výraz \frac{4}{2 k+3}+\frac{6}{2 k^{2}+3 k} pro k \neq 0 a k \neq-\frac{3}{2}.
=\frac{2}{k}
=\frac{2}{k+1}
=\frac{4}{k}
=\frac{2}{k-1}
