Completing the Square by Boxed Rockets

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

x^{2} - 5 x + 3

{(x - \frac{5}{2})}^{2} - \frac{13}{4}

x^{2} - 12 x - 2

{(x - 6)}^{2} - 38

x^{2} - 11 x - 7

{(x - \frac{11}{2})}^{2} - \frac{149}{4}

x^{2} - 12 x - 9

{(x - 6)}^{2} - 45

x^{2} + 14 x - 10

{(x + 7)}^{2} - 59

x^{2} - 5 x + 7

{(x - \frac{5}{2})}^{2} + \frac{3}{4}