Question

What value in place of the question mark makes the polynomial below a perfect square trinomial 9x^2+?x+64

Answer 1

Answer:

The middle term would be 48x

Step-by-step explanation:

In order to find this, we need to take the squares of the end terms and put them in a perfect square. Then we can distribute to find the middle term.

(3x + 8)^2

(3x + 8)(3x + 8)

9x^2 + 24x + 24x + 64

9x^2 + 48x + 64