(a)[2]
Using $A = \begin{pmatrix}-6 & 2 \\ 1 & 4\end{pmatrix}$, find $A^2$.
(b)[2]
Using $B = \begin{pmatrix} x & -5 \\ 2 & -3 \end{pmatrix}$, find the value of $x$ when $|B| = -2$.
Mathematics 4024 · O Level · Algebraic manipulation
Mathematics 4024 · O Level · Algebraic manipulation
Using $A = \begin{pmatrix}-6 & 2 \\ 1 & 4\end{pmatrix}$, find $A^2$.
Using $B = \begin{pmatrix} x & -5 \\ 2 & -3 \end{pmatrix}$, find the value of $x$ when $|B| = -2$.