Answer
Since $ad-bc=3-3= 0$, then $A$ has no inverse.
Work Step by Step
Let the matrix $A$ be given by
$$A=\left[\begin{array}{ccc}{-1} &{1} \\{3}& {-3} \end{array}\right].$$
Since $ad-bc=3-3= 0$, then $A$ has no inverse.
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