Hi all, this is my first post
Could somebody point in the right direction for solving this question.
I have a 2X2 matrix A
-50 -8
336 54
i am asked to find in terms of m, the expression det(A-mI)
and show it as a quadratic expression
[IMG]file:///C:/Users/IANDUG%7E1/AppData/Local/Temp/moz-screenshot.png[/IMG]
Where do i start? I am probably missing something really obvious
All help appreciated
Ian999