Find the rank of the matrices by minor method: 2-4-12

Find the rank of the matrices by minor method: $[\begin{matrix} 2 & - 4 \\ - 1 & 2 \end{matrix}]$

Matching exercise

Match the items on the right to the items on the left.

STEP 1

STEP 2

STEP 3

STEP 4

STEP 5