Q.1/ (7+7) Marks A- Use matrix inverse to solve the following system of equations: 4x + 6y + 2z = 28 2x – 2y + 4z = 2 x- 2y +z = -3 B- If A = following equation xI- A| = 0, note that x is a scalar...

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Extracted text: Q.1/ (7+7) Marks A- Use matrix inverse to solve the following system of equations: 4x + 6y + 2z = 28 2x – 2y + 4z = 2 x- 2y +z = -3 B- If A = following equation xI- A| = 0, note that x is a scalar quantity. and the identity matrix I = 9, find the values of x that satisfy the