Answer:
A. { }
Step-by-step explanation:
Absolute value cannot be less than zero.
-4 < 0
There is no solution for x, ∈, R.
Hope this helps.
Answer:
N= -7
Step-by-step explanation:
N+16=9
subtract 16 from both sides
N= -7
Step-by-step explanation:
first factorise the denominator
Answer:
imaginary
Step-by-step explanation:

from the working strp, we know that the number is imaginary
we can't square root the negative number
Answer:
yes that is correct. Do you have a question about it?