Question

60 POINTS

Answer 1

Answer:

$10\sqrt{5} - 4 \sqrt{10}$

Step-by-step explanation:

$\sqrt{5} (10 - 4 \sqrt{2} )$

Multiply

$\sqrt{5}$

with each term within the bracket

$= \sqrt{5} + \times 10 - \sqrt{5} \times 4 \sqrt{2}$

$= 10 \sqrt{5} - 4 \sqrt{10}$