Question

For what value (s) of P could the expression 100 divided by P squared minus 16 NOT be evaluated? Explain how you arrived at your answer?

Answer 1

100/(P^2 - 16)

It cannot be evaluated when the denominator is zero

so when is P^2 - 16 = 0
P^2 = 16
P = ±√16 = ± 4