Q3. If A = [2 4 41 4 2 4 show that A² -8A-201 = 0 where 1,0 are the unit matrix and 14 4 21 the null matrix of order 3 respectively. Use this result to find A¯¹. Q4. Find the inverse of the A matrix using Gauss-Jordan elimination method. [35 A = 1 2 L2 6 7 -1 4

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