Question

Factor the following expression to show the difference of two squares:
4x^2-16

I keep getting 4(x-2)+(x+2); what am I doing wrong?

Answer 1

\( \color{Black}{\Rightarrow 4x^2 = (2x)^2 }\)

Does that help?

Answer 2

You are correct, but you have put a '+' sign between (x - 2) and (x + 2).... :D

Answer 3

Is (4x+4)(x-4) the same?

Answer 4

or (2x+4)(2x-4)??

Answer 5

No no no

Answer 6

Yes, it's 2(x + 2)(x - 2)