Question

Help 4x^2 +16. Factor

Answer 1

Answer:

Not factorable

Step-by-step explanation:

this problem cannot be a factor. it's not a difference of squares

Answer 2

Answer:  4(x^2 + 4)

============================================

Explanation:

The terms 4x^2 and 16 have the factor 4 in common. We can pull factor out using the distributive property

4x^2 + 16 = 4*x^2 + 4*4 = 4(x^2 + 4)

So that's how 4x^2+16 turns into 4(x^2+4)

-----------

further info:

If you want to factor over the complex numbers, then x^2+4 would factor into (x+2i)(x-2i)

though it's not clear if your teacher wants you to do this or not