$A=\left[\begin{array}{rr} -5 & -9 \\ 8 & 7 \end{array}\right] $ and $B=\left[\begin{array}{rr} \dfrac{2}{37} & \dfrac{9}{37} \\\\-\dfrac{8}{37} & -\dfrac{4}{37} \end{array}\right]$ **Are $A$ and $B$ inverses?** [[☃ radio 1]]