Respuesta :

sqdancefan

When put in matrix form, the coefficients of

... 3x -2y = 7

... x + 4y = 2


look like


[tex] \left[\begin{array}{cc}3&-2\\1&4\end{array}\right] [/tex]


The determinant is 3×4 - 1×(-2) = 14.

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