Answer:
|2x|
Step-by-step explanation:
The square root symbol indicates the positive square root. That is, ...

Then the square root you show is ...

An octagon has 8 sides, a rotation of 45° (360°/8) will map the octagon onto its preimage. Answer is 8.
Answer:
y = 8(x-5)^2 -232
Step-by-step explanation:
Factor out the 8 to get
y = 8(x^2-10x-4)
y = 8(x-5)^2 -232