Perform the indicated operations

1. 5√10 + √10

2. 6√3 - 8√3 + 5√3

3. 4√27 + 8√12

4. -6√63 - 9√28 + 2√14

5. 5√6 x √10 - 4√15

6. √6k^2 x √4k + 3k √2k

1. 6√10

2. 3√3

3. Factor out the 9 from under the first square root: 4*3√3 = 12√3
factor out the 4 from the 2nd square root: 8*2√3 = 16√3
Add them to equal 28√3

You can do the rest.