Given that
M =
1 2
-1 3
find the value(s) of p and q given that M^2 + pM + qI = 0
This is what I did:
M^2 =
-1 8
-4 7
Therefore
p ( 1 2 ) + q ( 1 0 )
...(-1 3 ) .....( 0 1)
=
1 -8
4 -7
I don't know what to do next
(sorry i attempted to use the math bbcode but it got all messed up