3+(5+8)<span>
</span>The Associative Property of Addition states that you can add or multiply numbers any way, it doesn't matter how they are grouped.
The answer is B. closed circle on 4 and shaded to the right.
The quadratic formula is...

your a will be in front of your x^2, b in front of your x, and c will be the number without an x. Plug those into the equation and you'll get two answers. That will be it