Question

Would appreciate if someone could help. Thank you

Answer 1

Answer:

$-\frac{75}{4}$

Step-by-step explanation:

Determine the determinant

$\frac{9}{2}*(-\frac{9}{2})-(-1)*\frac{3}{2}$

Multiply / Remove parentheses

$-\frac{81}{4} +\frac{3}{2}$

Calculate

$-\frac{75}{4}$