Answer:

Step-by-step explanation:
Answer:
42x^2
Step-by-step explanation:

Answer:
All real numbers except where x<-3
Step-by-step explanation:
Values of x that make negatives under even radicals are not part of the domain. Any value of x that is less than -3 would make a negative under the square root, so those are not included in the domain.
Answer:
A
Step-by-step explanation: hope it helps