Sum
if `[x,y][(x),(y)]` = [25] and `[-x, y][(2x),(y)] = [-2]` find x and y if `x, y ε W` (whole numbers)
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Solution
`[(x,y)][(x),(y)] = 25`
`x^2 + y^2 = 25`
and
`-2x^2 + y^2 = -2`
`x , y ε W` (whole number)
It can be observed that the above two equations are satified when x = 3 and y= 4
Concept: Addition and Subtraction of Matrices
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