Dadas as matrizes reais $$A=\left[\begin{array}{lll}2& x& 0\\ y& 8& 2\\ 1& 3& 1\end{array}\right]B=\left[\begin{array}{lll}2& 3& y\\ 0& 8& 2\\ x& 3& x-2\end{array}\right]$$Analise as afirmações:

• I. $A=B\iff x=3$ e $y=0$

• II. $A+B=\left[\begin{array}{lll}4& 5& 1\\ 1& 16& 4\\ 3& 6& 1\end{array}\right]\iff x=2$ e $y=1$

• III. $A\cdot \left[\begin{array}{l}0\\ 1\\ 0\end{array}\right]=\left[\begin{array}{l}1\\ 3\\ 3\end{array}\right]\iff x=1$

e conclua: