Question

[Precalculus] Picture question (involving matrices)

Answer 1

Pic

Answer 2

I have the answer I just don't understand how to do it

Answer 3

i figured it out...

Answer 4

\[\det\left[\begin{matrix} 1 & 3 & 2 \\ 2 & -4 & 3 \\ 1 & 1 & -3\end{matrix}\right]\]

Answer 5

\[1 ((-4 \times -3) -(1 \times 3)) -3((2 \times -3) - (3 \times 1)) +2 ((2 \times 1 -(-4 \times 1))\]
\[=1 ((12) -(3)) -3((-6) - (3)) +2 ((2 -(-4))\]
\[=1(9) -3(-9) +2 (6)\]
\[=9+27 + 12\]
\[=48\]