Question

How to simplify square root of 98 - the square root of 50 - the square root of 72?

Answer 1

`-4sqrt(2)`

Explanation:

`sqrt(98) - sqrt(50) - sqrt(72) = sqrt(49*2) - sqrt(25*2) - sqrt(36*2)`
`= sqrt(49)sqrt(2) - sqrt(25)sqrt(2) - sqrt(36)sqrt(2)`
`= 7sqrt(2) - 5sqrt(2) - 6sqrt(2)`
`= -4sqrt(2)`