perform the indicated operations.simplify all answers as completely as possible

Answer:
4. 4√x-6x
5. 2√3-10√2-14√5
6. -14
7. 54√2
8. 0
9. 13√2
10. -8√3+4√7
11. 7m√2
12. -3³√2-4
13. 2³√x
14. 19⁴√2
15. 3x⁴√xy-2x⁴√xy
Step-by-step explanation:
EXCHANGE SA HEART AND STAR