Question

Combine these radicals
8$\sqrt{5} + 2\sqrt{45} \\\\A: 4\sqrt{5} \\B: 10\sqrt{5} \\C: 14\sqrt{5} \\D: 74\sqrt{45}$

Answer 1

Answer:

$7 \sqrt{5}$

Step-by-step explanation:

$\sqrt{5} + 2 \sqrt{45}$

$\sqrt{5} + 2 \sqrt{9} \sqrt{5}$

$\sqrt{5} + 2(3 \sqrt{5} )$

$\sqrt{5} + 6 \sqrt{5}$

$7 \sqrt{5}$