A ^−1 = 1/6(A^ 2 +cA+dI) where c, d ∈ R, then pair of values (c, d) are _________

Question

\(\begin{equation*} \begin{bmatrix} 1 & 0 & 0 \\ 0 & 1&1\\ 0&-2&4 \end{bmatrix} \end{equation*}\) ;\(\begin{equation*} I = \begin{bmatrix} 1&0&0\\ 0&1&0 \\ 0&0&1 \end{bmatrix} \end{equation*}\) 

A ⁻¹  = 1/6(A ² +cA+dI) where c, d ∈ R, then pair of values (c, d) are _________

Answer 1

Correct answer is -6,11

Explanation:::