Matrices & Determinants
Properties of determinants
Grade 12
Question:
<p>If \(\det(A)\)=5, then det(A\)^2A^2A⁻^3) equals:</p>
<p>(A) 5</p>
<p>(B) 25</p>
<p>(C) 125</p>
<p>(D) 1</p>
Step-by-Step Solution
Key Concept: Exponent sum: 2 + 2 - 3 = 1 \Rightarrow $A$.
1. Expression = $A$
2. $\det(A)$ = 5
Correct Answer: 1