Question

Find the values of following determinants.​

Answer 1

Answer:

1.

$- 1 \times 4 - 7 \times 2 = - 4 - 14 = - 18$

2.

$5 \times 0 - (3) \times ( - 7) = - ( - 21) = 21$

3.

$\frac{7}{3} \times \frac{1}{2} - \frac{5}{3} \times \frac{3}{2} = \frac{7 - 15}{6} = - \frac{8}{6} = - \frac{4}{3}$