Answer:
in this situation it would be to subtract
Step-by-step explanation:
Answer:
Mean = 20
Step-by-step explanation:
240................................ It had to be 20 characters so sorry for the large answer <span />
(x^2) - 16 / x+4 = (x-4)(x+4) / (x+4) = x-4, x not equal to -4
D is the answer.