Question

Combine these radicals 3sq root 2 - 5 square root 2

Answer 1

- 2
`√(2)`

Explanation:

Combining radicals is similar to collecting like terms in algebra, that is

3x - 5x = x(3 - 5) = - 2x, so

`√(2)` (3 - 5) = - 2
`√(2)`