More homework help- Math Problems- HELP QUICK PLZ.!?

[Christy H]

Okay so I have two other open questions going but I also need help with these problems...just email me the questions showing me the answers and how you got the answers....THANKS! dorkalicious_430@yahoo.com

Add or subtract. Simplify by collecting like radiacal terms, if possible:
Radical is a square root sign
1)Outside the radical 9 under the radical 9- under a radical 72+ under a radical 98

2)Outside the radical 2 under the radical 27 - Outside the radical 3 under the radical 48+ Outside the radical 3 under the radical 12

3)Under a radical 12x^2 + Undr a radical 27

4)Under a radical 1/2 - Under a radical 1/8