Question

please answer it step by step please​

Answer 1

Answer:

$\sqrt{5} +\sqrt{20}+\sqrt{45}\\= \sqrt{5} +2\sqrt{5}+3\sqrt{5}\\\\= 6\sqrt{5}$

Step-by-step explanation:

Answer 2

$\sqrt{5} + \sqrt{20} + \sqrt{45}$

$= \sqrt{5} + \sqrt{2 \times 2 \times 5} + \sqrt{3 \times 3 \times 5}$

$= \sqrt{5} + 2 \sqrt{5} + 3 \sqrt{5}$

$= 2 \times 3 \sqrt{5}$

$= 6 \sqrt{5}$