Question

How do you simplify `2 sqrt 5+ 2 sqrt5`?

Answer 1

`4sqrt5`

Explanation:

Treat radicals like variables, we can only add or subtract those with similar radicals

Let `x = sqrt5`

`=> 2sqrt5 + 2sqrt5 => 2x + 2x`

`=> 4x`

`=> 4sqrt5`