Matrix Equation Solution Sum (Jee Mains)

Formation, Types & Operations

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Matrix Equation Solution Sum

If $X = \left[ {\begin{array}{*{20}{c}} x\\[0.9em] y\\[0.9em] z \end{array}} \right]$ is a solution of the system of equations AX = B, where adj $A = \left[ {\begin{array}{*{20}{c}} 4&2&2\\[0.9em] { - 5}&0&5\\[0.9em] 1&{ - 2}&3 \end{array}} \right]$ and $B = \left[ {\begin{array}{*{20}{c}} 4\\[0.9em] 0\\[0.9em] 2 \end{array}} \right]$ , then |x + y + z| is equal to :

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