Question

How do you simplify `sqrt20 + sqrt64 - sqrt125`?

Answer 1

`8+2sqrt3-5sqrt5=15.716`

Explanation:

`sqrt20+sqrt64-sqrt125`

= `sqrt(2xx2xx5)+sqrt(2xx2xx2xx2xx2xx2)-sqrt(5xx5xx5)`

= `2sqrt3+(2xx2xx2)-5sqrt5`

= `8+2sqrt3-5sqrt5`

= `8+3.464-11.18=15.716`