Question

4√2 + 7√2 - 3√2

Answer 1

11√2 - 3√2
= 8√2

Answer 2

5√6x - 8√14x - 9√6x + 18√14x

Answer 3

bring likt terms together:
5√6x - 9√6x - 8√14x + 18√14x
now work out the first two and last two terms and you've got it

Answer 4

i meant 'like terms'

Answer 5

3√10 + 7√15 - 6√10 - 4 √15

Answer 6

5^4√7 - 8^3√7 - 2^4√7 - ^3√7