Question

I don't know how to find the answer for (3 + 6b + 3b^2). I'm still confused even after my teacher explained it. Could someone break it down for me?

Answer 1

steps below

Explanation:

3 + 6b + 3b² = 3 (b² + 2b + 1) = 3 (b + 1)²

root: -1 if 3 + 6b + 3b² = 0 b = -1