Completing the Square by Boxed Rockets

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

2 x^{2} - 15 x + 10

2 {(x - \frac{15}{4})}^{2} - \frac{145}{8}

3 x^{2} - 14 x - 1

3 {(x - \frac{7}{3})}^{2} - \frac{52}{3}

2 x^{2} + 5 x + 3

2 {(x + \frac{5}{4})}^{2} - \frac{1}{8}

4 x^{2} - 15 x - 10

4 {(x - \frac{15}{8})}^{2} - \frac{385}{16}

4 x^{2} - 7 x - 9

4 {(x - \frac{7}{8})}^{2} - \frac{193}{16}

3 x^{2} - 15 x - 6

3 {(x - \frac{5}{2})}^{2} - \frac{99}{4}