Question

Combine these radicals.
8V5+2V45
L0 415
01015
1415
7445

Answer 1

14
`√(5)`

Explanation:

Using the rule of radicals

`√(a)` ×
`√(b)` ⇔
`√(ab)`

Simplifying

`√(45)`

=
`√(9(5))`

=
`√(9)`
`√(5)`

= 3
`√(5)`

Then

8
`√(5)` + 2(3
`√(5)`)

= 8
`√(5)` + 6
`√(5)`

= 14
`√(5)`