Answer:
B
Step-by-step explanation:
First, let's rearrange the given equation into something more recognizable. If we add 13 to both sides, we now have the polynomial
. We can now use the quadratic formula to solve.
Remember that the quadratic formula is

Substitute the numbers from the equation into the formula.

Simplify:


Here, I'm going to assume that there was a mistype in option B because if we divide out the 2 we end up with
.
Hope this helps!
Answer:
Associative property of multiplication.
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
heres a model
A ----------R---------D
A ----?-----R----8---D
A----------15----------D
15 - 8 = 7
AR = 7
Answer is 1704 and to explain just put that you added to get your final answer