Completing the Square by Boxed Rockets

Write the following in the form ${(x + a)}^{2} + b$

x^{2} - 8 x - 6

{(x - 4)}^{2} - 22

x^{2} - 4 x - 7

{(x - 2)}^{2} - 11

x^{2} - 12 x + 5

{(x - 6)}^{2} - 31

x^{2} + 4 x + 4

{(x + 2)}^{2}