Question

Factor.

x2 − 8x + 16

(Points : 1)
(x + 8)2
(x − 8)2
(x + 4)2
(x − 4)2

Answer 1

You should recognize and be able to dissect a perfect square trinomial.

4^2 = 16 -- This eliminates the first two.
4*2 = 8 -- Okay, the bottom two are still in the running.
-8 < 0 -- That's it. The third one is gone.

Only the last remains.

Answer 2

so its A ?

Answer 3

Tell me how you concluded that in light of the words "This eliminates the first two."