What function is shown on this graph

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Which of these would have been most likely to have been a carpetbagger during the reconstruction era? a) a new york businessman who relocated to mississippi b) a former slave who was able to buy land in birmingham c) a carolina-born politician who supported the democratic d) a former confederate officer who owned a farm in memphis eliminate