Question 1060638
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If you don't know what the determinant is, then learn it.


If you know what the determinant is, then calculate it on your own.


It is the same as to ask here on the forum what is 2x2.


To learn on the determinant of a 2x2-matrix, see the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Matrices-and-determiminant/Determinant-of-a-2x2-matrix.lesson>Determinant of a 2x2-matrix</A>,

in this site.


Your determinant is 4*(-2) - 3*(-7).