If A = 1-10234012 and B = 22-4-42-42-15 are two square matrices, find AB and hence solve the system of liner equations: x - y = 3, 2x +3y +4z = 17, y + 2z = 7.

If A = $[\begin{matrix} 1 & - 1 & 0 \\ 2 & 3 & 4 \\ 0 & 1 & 2 \end{matrix}]$ and B = $[\begin{matrix} 2 & 2 & - 4 \\ - 4 & 2 & - 4 \\ 2 & - 1 & 5 \end{matrix}]$ are two square matrices, find AB and hence solve the system of liner equations: x - y = 3, 2x +3y +4z = 17, y + 2z = 7.

Matching exercise

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

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