Question

$( \frac{ 1}{5} {z}^{2} + \frac{9}{2} ) {}^{2}$
alguien me puede ayudar a resolver esto

Answer 1

$(\frac{1}{5} z^{2})^{2} + 2 * \frac{1}{5} z^{2}  * \frac{9}{2}  + (\frac{9}{2})^{2}$

$\frac{1}{25} z^{4} +\frac{9}{5} z^{2} +\frac{81}{4}$