engineering recuitment NFC Chemical Plant Operator Mock Test Mathematics Matrices Operations on Matrices
Find the value of x and y such that \(\left[ {\begin{array}{*{20}{c}} {x + y}\\ {x - y} \end{array}} \right] = \left[ {\begin{array}{*{20}{c}} 8\\ 4 \end{array}} \right]\)
1
x = 5 and y = 2
2
x = 6 and y = 2
3
x = 3 and y = 5
4
None of these