Question

Given the following perfect square trinomial, fill in the missing term.

x2 − 16x + ____

Numerical Answers Expected!

Answer 1

what is half of \(16\) ?

Answer 2

8.

Answer 3

k
what is \(8^2\) ?

Answer 4

i.e. what is \(8\times 8\)
that is your answer

Answer 5

Hm,

Well you know that the middle term is 2(a)(b), or at least I assume you do..

x^2 - 16x + __

√x^2 = x

-16x = 2(x)(b) = 2xb

-16x = 2xb ( solve for b)
/2x /2x

-8 = b

(x - 8)^2 = (x)^2 - 2(x)(8) - (8)^2 = x^2 - 16x + 64