# Math Help - Question on how to write in a+bi form.

1. ## Question on how to write in a+bi form.

How could this be written in a+bi form?
(x^2+2)

2. In other words I'm asking, how do you write radical(-2) in a+bi form?

it would just be $\sqrt {2}~i$
so, $(x^2 + 2) = (x + \sqrt{2}~i)(x - \sqrt{2}~i)$