The 3rd or 1st one I'm not sure which one but u have an idea of what it might be
I don’t know sorry, just commenting for more answers.
Answer:
836
Step-by-step explanation:
4 times 19 times 11
Actually I didn't see the (-5, -27), the answer would be -2.
Answer:
{x\ x e U and x has a negative square root} is an empty set.
Step-by-step explanation:
If x e U, x is a negative real number, and they don't have a square root (they don't have even roots). Their square roots are complex numbers, not real ones.