Evaluate the determinant | $1$1 | $7$7 | . | ||
$9$9 | $5$5 |
Evaluate the determinant | $-4$−4 | $-6$−6 | . | ||
$3$3 | $1$1 |
Evaluate the determinant | $11$11 | $13$13 | . | ||
$12$12 | $14$14 |
Evaluate the determinant | $\frac{1}{3}$13 | $-15$−15 | . | ||
$\frac{4}{5}$45 | $-6$−6 |