Answer:
16
Step-by-step explanation:
9 divided by 6 is 1 but leaves 3 leaving 36 divide that by 6 so 16
a perfect square trinomial, (x + y)² = x² + 2xy + y²
so, if we have the x of the bx, what is left is the b
the expression would have to be (x + 7)², since we have the 49 and the x²
so, what's left: x² + 14x + 49,
b = 14
<em>hope it helps :)</em>
Answer:21
Step-by-step explanation:21