Question

How do you simplify `sqrt320`?

Answer 1

`= 8 sqrt 5`

Explanation:

`sqrt(320)`

We simplify the number by prime factorisation (expressing a number as a product of prime factors).

`sqrt320 = sqrt ( 2 * 2 * 2 * 2 * 2 * 2 * 5 ) = sqrt (8 * 8 * 5 )`

`=sqrt(8^2 * 5`

`= 8 sqrt 5`