Question

Simplify 6V 80.
0 6+16 51
0 6+415
0 6+1615
O 6+4v5i

Answer 1

2nd option

Explanation:

Using the rule of radicals

`√(a)` ×
`√(b)` ⇔
`√(ab)` and
`√(-1)` = i

Simplifying the radical

`√(-80)`

=
`√(16(5)(-1))`

=
`√(16)` ×
`√(5)` ×
`√(-1)`

= 4 ×
`√(5)` × i

= 4i
`√(5)`

Then

6 +
`√(-80)`

= 6 + 4i
`√(5)`