Cofactor Matrix (2x2) - Single Row or Column

Question

Which shows row 1 of the cofactor matrix of this matrix? Fill only that row and leave the other entries blank.

$$\left[ {\begin{array} {cc} \fcolorbox{#1b7f3b}{#e6f7ec}{$-6$} & \fcolorbox{#1b7f3b}{#e6f7ec}{$-6$} \ -4 & 0 \end{array}  } ight]$$

Accepted Answer

$$\left[ {\begin{array} {cc} 0 & 4 \ \square & \square \end{array}  } ight]$$

Answer

$$\left[ {\begin{array} {cc} 2 & 4 \ \square & \square \end{array}  } ight]$$

Answer

$$\left[ {\begin{array} {cc} -2 & 4 \ \square & \square \end{array}  } ight]$$

Answer

$$\left[ {\begin{array} {cc} 1 & 4 \ \square & \square \end{array}  } ight]$$

Practice: Matrices - Cofactor Matrix (2x2) - Single Row or Column