19. Use Theorem 8.9.3 to find the determinant of B where

$$

\begin{aligned}

B &= \begin{bmatrix}

2 & 2 & 3 \\

2 & 5 & 6 \\

3 & 6 & 10

\end{bmatrix}

\end{aligned}

$$

Note that B = I + bb' where b' = [1, 2, 3].