Vertex form is

where (h,k) is the vertex.
We can see that the vertex of the graph is at (2,0), and that the graph opens downwards, but does not look stretched at all.
Therefore,
a = -1
h = 2
k = 0
and our vertex form equation is

which is answer A
Answer:
x = -96
Step-by-step explanation:
Yes, it can. Side 22cm can be the hypotenuse (longest side in a right angled triangle) while the others can be shorter sides. These sides form a RIGHT-ANGLED TRIANGLE.
Answer:
correct answer is : D. 42 + 3x - 7