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Answer 1

Answer:

$\frac{26}{7}$ x $\sqrt{5}$

Step-by-step explanation:

Answer 2

Answer:

$\boxed{=\frac{26\sqrt{5}}{7} }$

Step-by-step explanation:

$\implies \sqrt{5} -\frac{2}{7} \sqrt{5} +3\sqrt{5} \\\\ \implies \sqrt{5} \times \frac{7}{7} -\frac{2}{7} \sqrt{5} +3\sqrt{5} \times \frac{7}{7} \\\\ \implies \frac{7\sqrt{5}}{7} -\frac{2}{7} \sqrt{5}+\frac{21\sqrt{5}}{7} \\\\ \implies \frac{7\sqrt{5}-2\sqrt{5}+21\sqrt{5} }{7} \\\\ \implies \frac{26\sqrt{5}}{7}$