Помогите с выполнением заданий 25,26,27

25) $2 \sqrt{5a}=\sqrt{20a}$

$2m^{3} \sqrt{3m} = \sqrt{12m^{7}}$

$-4c\sqrt{5c}= - \sqrt{80c^{3}}$

26) $\sqrt{125c^{3}}= 5c\sqrt{5c}$

$\sqrt{243a^{9}}= 9a^{4}\sqrt{3a}$

$\sqrt{8z^{4}}= 2z^{2}\sqrt{2}$

27) \frac{1}{2}\sqrt{20} " alt="7\sqrt{\frac{1}{7}} > \frac{1}{2}\sqrt{20} " align="absmiddle" class="latex-formula">

\sqrt{5} " alt="\sqrt{7} > \sqrt{5} " align="absmiddle" class="latex-formula">

\frac{1}{4}\sqrt{243} " alt="3\sqrt{27}> \frac{1}{4}\sqrt{243} " align="absmiddle" class="latex-formula">

\sqrt{\frac{243}{16}} " alt=" \sqrt{243}> \sqrt{\frac{243}{16}} " align="absmiddle" class="latex-formula">