Question

4 square root of 2 plus 7 square root of 2 minus 3 square root of 2

Answer 1

because they all have square roots of 2 you can just do the numbers, Eg: 4+7-3 then place the square root ontop. Sorry I'm not that good at explaining

Answer 2

An example would be 3 square root of 2 plus 4 square root of 2 minus 1 square root of 2. This would end up 3+4-2. Which equals 5. All you have to do is add the square root of 2. It would be like this 5^2. Hope this helps :)