Completing the Square by Boxed Rockets

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

x^{2} - 2 x + 4

{(x - 1)}^{2} + 3

x^{2} + 9 x - 6

{(x + \frac{9}{2})}^{2} - \frac{105}{4}

x^{2} + 14 x - 5

{(x + 7)}^{2} - 54

x^{2} - 9 x + 8

{(x - \frac{9}{2})}^{2} - \frac{49}{4}

x^{2} + 2 x - 8

{(x + 1)}^{2} - 9

x^{2} + 4 x + 3

{(x + 2)}^{2} - 1