A) by completing the square... X^2-8x+16+20-16 = (x^2-4)^2 +20-16=(x^2-4)+4
B) Since the coefficient of x^2 is positive, it is a quadratic function which increases positively. You know that it will always be above the x axis and therefore positive since the vertex is at (4,4) and increasing
Answer:
The answer to your question is: Point (-1/2 , 17/4)
Step-by-step explanation:
Data
A(-2, 5)
B (2, 3)
ratio 3:5 r = 3/5
Formula

Process
x = 



x = -1/2 y = 17/4
Answer: 44
Step-by-step explanation:
Sum of all angles is 180 so it is 103+33+x = 180.
so, it is 136+x = 180
x = 180-136 => 44
The answer is 9.
Hope I helped