Question

Factor Completely: x2 + 16

(x + 4)(x - 4)
(x - 4)(x - 4)
(x + 4)(x + 4)
Prime

Answer 1

I think the correct answer from the choices listed above is the last option.The expression x^2 + 16 is a prime expression which cannot be further simplified over the real numbers. But when considering the complex numbers, the factor would be:

(x + 4i)(x - 4i)

Answer 2

Answer:

D.(x − 4)(x − 4)

Step-by-step explanation: