Question

help!!!!!!!!!!!!!!!!!!

Answer 1

Explanation:
We can rewrite the expression:
√8×√20
using the following rule for radicals:
√a⋅√b=√a⋅b
√8⋅√20⇒√8⋅20⇒√160
Now, we can use this rule for radicals to simplify the radical:
√a⋅b=√a⋅√b
√160⇒√16⋅10⇒√16⋅√10⇒4√10

Answer 2

Answer:

I solved it, but my duties are not in the choices

Step-by-step explanation:

$- 2 \sqrt{5 \: } + 2 \sqrt{2} \\ \:$