Answer:
Both are equal to 
Step-by-step explanation:
If the exponent is negative we can turn it into a fraction and make it positive.
This means the number goes to the denominator and the numerator becomes one. Therefore the following.

first factor out -4
-4(x^2 + 7x + 12)
then you can factor what is in parenthesis
-4(x+4)(x+3)
??? What is the rest of the question?
If AB=AC then It is an isocoles triangle. Because of this, Angle ABC=ACB, meaning they are both 60°. This means that Angle BAC is also 60°. Becasue of circle theorms, the angle BOC=2BAC so angle BOC=120°