It is impossible to answer your question exactly as you posed it. The problem is that for any quadratic polynomial expression there are exactly two linear factors. Sometimes they are identical when the polynomial is a perfect square and so you could, with a slight wink at proper terminology, answer this. But this particular quadratic trinomial is NOT a perfect square, hence there are two different linear factors.
Now, if what you really meant to say is "What is the linear factorization of..." or "What are the linear factors of..." that is another thing altogether. THOSE questions can be answered. Unfortunately, you didn't ask either of those questions.
