Answer:
The answer is C.
Step-by-step explanation:
When you add all of the exterior of a triangle, you will end up with 360.
a
easy
3+√5 is a root.
so 3-√5 is also a root
or (x-(3-√5)) is also a factor of f(x)
n =-19
3* (n+7) = -36
Distribute
3n+21 = -36
Subtract 21 from each side
3n+21-21 = -36-21
3n = -57
Divide by 3
3n/3 = -57/3